Hei Pickup Coil Problems

The other problem the HEI can have is there a metal ground strap that is attached to the coil, if strap is broken or missing, of if the wire in the wiring harness has failed going to the ground strap, no spark. Tyler's Neighborhood Garage 14,108 views. Chevy CK Pickup with Electronic Ignition 1988, HEI Ignition Coil by NGK®. i have problem with pickup coil going bad on 85 chevy van c20 5. I already tried a new coil and new ig module but it is still not. Putting a brand new distributor or coil on a vehicle with old or worn spark plug wires and old/worn spark plugs is simply silly and will most likely cause you to replace the same parts over again. HEI Distributor Conversion This page describes the installation of a GM HEI (High Energy Ignition) electronic distributor in my '74 Nova with a 350 small block. Re: Hei Pickup coil maybe causing problems? 06-15-04 04:54 PM - Post# 463100 In response to Lawnworker Update-The pick up coil was the problem. Theres not even a tiny spark does not even hurt to touch the end of the plug. The pickup coil monitors the rotation of the distributor and triggers the ignition system at the optimal moment to produce the best timed spark for best engine performance. The Ford or Mopar electronic boxes are limited with either a resistor wire or large ballast resistor that limits the voltage to the primary side of the coil to around 7. If the hot wire checks good then the problem could be with one of the electronic components inside the distributor. The pickup coils are wound opposite direction for CW and CCW and the screw holes are offset so the magnets can only be installed one way, but CW and CCW magnets have opposite polarity, North up on one and South up on the other. Physical Installation. This means testing with a common Ohmmeter is unlikely to show anything but the grossest problems like a complete open or high resistance. the one on the left (c) or the one on the right (b). This trick works with any variable reluctor trigger using a permanent magnet, Ford, Mopar, GM HEI, etc. Here's a positive pulse waveform. The coils rarely go out, just go with quality parts when you fix it, should have no problem. Could that be the problem area. The resistance ranges given are correct. Ford Inline Straight 6 Cylinder 65-76 240 300 4. We used 10' of the twisted pair wire for the pickup to HEI module, figuring that if that long wire worked OK, the final solution of 3-4 feet would work as well. The other components of the distributor, such as the mechanical and vacuum advance, gear drive and shaft, are all very similar in function to those found on a breaker-point system. He can convert about any distributor to a GM HEI. When I go to set it lower the car will die and spit out the carb. I bought a 1972 GMC Sierra 6 months ago. Had to stop by Sears to replace my 3/8" ratchet, and picked up a punch set too The job to replace that pickup coil wasn't as bad as I thought it was going to be, just FYI. The magnetic pick up coil is located inside the distributor underneath the rotor and weight and spring assembly. If you have a weak starting system it may not light where a points type will. This feature allows for a much hotter spark and increased gap on the spark plugs. i got my meter out and read across the pickup coil, it tested good. I referenced an 89 Chevy R3500 because I already own one. Then I put both multi meter leads on pickup coil terminals it showed infinite again instead of 800-1500ohms. You are eligible for a full refund if no ShippingPass-eligible orders have been placed. Disassembled HEI (Not shown: roll pin for distributor gear, spring clip to retain pickup coil; screws to retain ignition coil and cover, and plastic grease reservoir seal. Order Ignition Coils for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. If this process does not operate the way it is supposed to, ignition coil symptoms appear. Ignition coil and button appear to be of higher quality than OEM parts. HEI Coils and Ignition systems must be powered with +12 volts to work properly. He converts the basix points or similar dist to run a reluctor and pickup coil. painlessperformance. Re: My truck is eating ignition modules like candy! I would have liked to have the coil tested, but none of the places near me seem to be able to do it. Do not know if any spark was produced. i put the ground strap on, tried to start it, and no luck. 0 in it and a HEI ignition and Vacuum advance. There is a module checker but most service places don't have one. if the vehicle has an intermittent fault, at certain times or revs, this is generally an engine problem, and is not the fault of the. The ECU is not involved. 5 ohm & 8 mH on the primary with 85:1 windings. Tech-Tip - Pick up Coil Replacement by Jim Hallman and Paul Vargyas. The severity of the symptoms vary according to which of the ignition coils are failing. The pickup coil in the distributor? !976 should be an HEI distributor. If you need to just test the ignition coil, your starting point is TEST 3: Testing The Ignition Coil's High Tension Wire. When I go to set it lower the car will die and spit out the carb. HEI Distributor Pickup Coil Test - Duration:. YourMechanic. I'm battling an overheating problem in my. Otc 6589 Electronic Ignition Spark Tester (Auto Accessory) 4140 Review for otc 6589 electronic ignition tester. Full CNC machined aluminum body. Kit includes mechancial advance springs, and vacuum advance (non-adjustable). Need a replacement Ignition Coil for your Chevy? Shop quality Ignition Coil Packs from 1A Auto. Still have old ignition module but thinking of going to the HEI distributor with built in ignition module. This system replaced the conventional points type distributor with a magnetic pickup coil and electronic control unit (ECU). Holley carburetors powered every Monster Energy NASCAR® Cup team and nearly every NHRA® Pro-Stock champion for four decades. Find MSD Magnetic Pickups 84661 and get Free Shipping on Orders Over $99 at Summit Racing! The MSD magnetic pickups are the same high-output assemblies that are currently found in all MSD distributors. A vehicle's Toyota Pickup Ignition Coil takes low-voltage charge from the vehicle's battery and transforms it to an increased voltage so that the spark plugs can transmit a spark across the spark plug gap. The HEI Distributor has been a standard in the world of stand-alone electronic ingitions since 1974. Our entire kit costs less than just the ignitor box from Yamaha when it was available. HEI caps have the coil built into them , an all in one ignition as compared to a external cylindrical coil. The most common symptom of a faulty ignition coil is when the car runs for a while and the engine dies abruptly. If spark is found, the problem may be the TFI module or the PIP (profile ignition pickup or reluctor in the distributor) so go to step 5. hei distributor. I let the coil cool down and the car then starts and off we go again. On 1996 and newer vehicles, the OBD II system should detect coil problems as well as misfires and generate a fault codes that identify the problem coil or cylinder. But not everyone goes this route. It's caused by a lack of spark which can be either the ECU's fault (on EFI cars), or the coil on pretty much any car. Re: My truck is eating ignition modules like candy! I would have liked to have the coil tested, but none of the places near me seem to be able to do it. By Bill Hanlon, edited by Larry Gorden. Skip to main content. Re: Pertronix Ignitor ---anyone had problems? No issues with minehad a misfire once and found the +/- leads at the coil were loose, snugged them up and have had no issues since If you can leave two black stripes from the exit of one corner to the braking zone of the next, you have enough horsepower. Take the cap off, unplug the wires going to the distributor, remove the rotor and the pickup coil is under the rotor and held. Instead of using a point set to make and break electrical contact to the coil, the TI uses a magnetic pickup and transistors to interrupt the coil current and fire the spark plug. This Wiring Section details the optional features of the MSD 7AL-3 and how to wire each system. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. It can be used with 16 volt batteries and can withstand a momentary 24 volts in case of jump starts. Coil Style: In-cap. This happens when the ignition coil or module becomes too hot. Mallory build their distributors with stabilized points to eliminate float and bounce, brass case corrosion. Get the best deal for MSD Car & Truck Distributors & Parts from the largest online selection at eBay. I got 2 coils with the plug wires and 2 HEI modules at a salvage for less than $20. I had not planned on removing the distributor just to change the pickup coil, my eye sight not good, blind in one and have very blurred vission other, willl need pictures to see how it is assembled, surely this can be installed without removing distributor, course it would be easier to instatl but then I would have extra trouble restabing and retimimg motor on top it all. View our full line of performance auto parts & accessories including carbs, engine building tools and engine dress up for Chevy, Ford and Mopar. They won't be able to show a primary short. gm hei distributor and coil wiring diagram - Yahoo Image Search Results Picture Of Ford Alternator Wiring Diagram Internal Regulator Ford Alternator Wiring 5 Wire Wiring Diagram5 Wire Voltage Regulator Wiring Diagram Online Wiring Diagramalternator Wiring ford alternator wiring diagram internal regulator|bookingritzcarlton. • A pickup coil contains a coil of wire, and the resistance of. Does this seem like the source of my problem? If so, it seems that my only option is to get 12v constant hot with a 12gua wire off the starter relay lug, and use a relay to switch it on to the coil. The pickup coil monitors the rotation of the distributor and triggers the ignition this problem will persist and. The solution for the crossfire is to not run your plug wires parallel. The only difference is that the number one firing position on the HEI distributor is in the 5:30 position such as the one on my 86 GMC pickup with a chevy 305 small block. Aveo Ignition Coil. Changing pick-up coil in distributor-Delco HEI? shaft/magnet is demagnetized causing problems. Notice: Undefined index: HTTP_REFERER in /home/sites/heteml/users/b/r/i/bridge3/web/bridge3s. The module, pickup, capacitor and wiring all seem to be quality, but no brand was evident without disassembly. I have checked and replaced the ignition coil, pick-up coil, control module, cap, rotor, and even the RF capacitor and wiring harness but with no avail. By Bill Hanlon, edited by Larry Gorden. Theres not even a tiny spark does not even hurt to touch the end of the plug. Any resistance measurement less than infinity requires replacement of the pickup coil. Test em, if all looks good, take the module to a parts store, they test em for free. The second thing is to locate the 4 wire connector that feeds into the ignition module. An HEI coil has very low primary resistance, typically in the range of. We recommend a complete package for best results. (Measuring actual coil inductance, resistance, & capacitance outside of a lab is not doable - you have to disassemble the thing to get meaningful readings. & replace pick-up coil -no spark at hei tester indicates module rs not working: replace module. Learn about this problem, why it occurs, and how to fix it. 1973 - 1979 F-100 & Larger F-Series Trucks - Pickup coil testing? intermittance possible? - hey guys im curious if my pickup coil is bad although the truck still runs? i dont know if theres such a thing as a p/u coil going bad or on its way out or weaken over time?. I let the coil cool down and the car then starts and off we go again. What causes GM HEI coil failure? but I'm not so sure that was the real problem anyway. NOT the Ford style “TFI” coil. The black pickup wire is connected to terminal G on the HEI module. If there is a spark between the coil wire and the engine, then both the 6A box and the coil are working, which means the problem lies with the ignition pickup in the distributor. If you need to just test the ignition coil, your starting point is TEST 3: Testing The Ignition Coil's High Tension Wire. Ford Inline Straight 6 Cylinder 65-76 240 300 4. March 2006. My question is which plug gets the 12 volt. Choose your Chevy Model. I have now put in 8! I pull the module out and test it: Yep, cooked. Tech-Tip - Pick up Coil Replacement by Jim Hallman and Paul Vargyas. Has a machined base for an accurate fit and includes cap with brass terminals for improved conductivity, rotor, and high-RPM control module. chevrolet gmc 1975-1988 250-292 hei pick up nos gm Delco Remy HEI Ignition Pick Up Coil D1907. The real thing has a calibrated spark gap that will properly load an HEI coil whereas the homemade unit won't present as much of a challenge to your coil. The ignition coil is truly an amazing little device. If the ignition (especially the timing), electrical, starting and charging systems are otherwise adjusted and working like they should, the problem may be "heat soak". I swung by Napa auto parts, picked up a module & pickup coil there. I have seen weak coils that would allow the engine to run at idle and light load, but could not produce a spark at the HEI spark tester like those I've listed. Finally, finish the re-assembly with a new rotor and cap. One of these will go to the VR circuit input (DB37 pin #24) the other to ground. The second thing is to locate the 4 wire connector that feeds into the ignition module. MSD Pro billet distributor, problems If this is your first visit, be sure to check out the FAQ by clicking the link above. Maybe because I am a poor student, but mostly because a coil is a coil is a coil when it comes to street use. Pick up an advance curve kit that contains various springs so you can experiment with re-curving the distributor. With the right tools (dizzy wrench, punch) it was cake. In addition to the module, you will find the ignition coil, the pick-up coil, the magnetic pick-up assembly, and the mechanical and vacuum advance units- all nestled tightly under the cap. • The pickup coil must generate an AC voltage pulse to the ignition module so that the module can pulse the ignition coil. We also shielded the 14 gauge wire we ran between the coil negative and the module to keep it from generating electrical noise into the mag pickup wire. i have problem with pickup coil going bad on 85 chevy van c20 5. " "The third pickup coil has the same polarity as one of the other coils, but it has longer leads which are necessary in its application. To upgrade from points to an HEI, begin by obtaining a known HEI, or freshen one up that is in good shape (i. cap that is marked dist. Has a machined base for an accurate fit and includes cap with brass terminals for improved conductivity, rotor, and high-RPM control module. Got the module (7 pin, but a 4 pin will work, too) at the junkyard for $7. Order Ignition Coils for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. remove pick-up coil module connector & turn on ignition switch connect test lite to +12v source note: momentarily touch the other test lite lead to the module's small terminal -spark at hei tester indicates pick-up coil not working : remove dist. The mileage between failures is random: 3k, 5K, 8K. time at high rpm. Racing Ignition Coils. (Measuring actual coil inductance, resistance, & capacitance outside of a lab is not doable - you have to disassemble the thing to get meaningful readings. Disconnect the coil wire so the engine can't fire or backfire. I decided to buy a n HEI from Summit. Spectra Premium is specialized in aftermarket, OEM and tooling automotive components for heating & cooling, fuel delivery, and engine management systems. If you need to just test the ignition coil, your starting point is TEST 3: Testing The Ignition Coil's High Tension Wire. If no spark is found, make sure that with the key in the run position there is voltage at one of the coil terminals. Designed for small and big block standard deck Chevy V8, this unit replaces and upgrades stock High Energy Ignition distributors found in 1987-1993 car and 1987-1995 truck external coil applications. Automotive Group provides the best suspension and related chassis component solutions to create a superior buyer experience for the professional and hobbyist car builder or installer. Very rare to lose a pickup coil. By Bill Hanlon, edited by Larry Gorden. We recommend a complete package for best results. Test em, if all looks good, take the module to a parts store, they test em for free. Power going in but nothing coming out. they trigger spark on the negative slope following the positive pickup pulse. There are three main components in an HEI: the ignition module, the pick-up coil and the integral high-tension coil. The high energy ignition (HEI) ignition system has been a vast improvement over the old standard cap, rotor and point ignition system used in the past. This service was begun in 1977, by myself, David Ray, to meet the needs of those that want to utilize an HEI ignition system, where the size of the large, coil in cap HEI will not fit without severe clearance/interference issues, and/or problems, or, to retain the appearance of a stock point distributor, and, still use a better HEI ignition system. Coil testing without special equipment is pretty useless. I'm not trying to read a value, but rather just observe the signal to see if it is causing the intermittent problem. i put the ground strap on, tried to start it, and no luck. Best Answer: GM HEI systems are pretty bulletproof, their weak points were the pickup coil wires breaking from flexing from the vacuum advance and the rotors sometimes get hole burned in them from all the spark the HEI makes. Full CNC machined aluminum body. HEI Distributor Troubleshooting With Performance Distributors. Ford Duraspark coils - the type with two prongs that a horseshoe connector snaps on to. (has run twice tho) comes up with p0335 rpm noise. if the vehicle has an intermittent fault, at certain times or revs, this is generally an engine problem, and is not the fault of the. HEI ignition systems are very dependable and offer great performance on a number of applications. The TI system solved these problems and was reliable up to 10,000 RPM all day long. After looking at the waveforms, I see that both C-EI & HEI use positive polarity, ie. I got 2 coils with the plug wires and 2 HEI modules at a salvage for less than $20. The distributor assembly does NOT have to be removed to replace the pick-up coil for the 1985-88 HEI distributors. Voltage output should be very small when the two wires are connected to the meter, while the engine is being spun over with the starter motor. either the distributor cap is a huge hurken thing (HEI) or it has an external coil somewhere or the cap has a ninth distributor hole in the middle of the cap to put a coil. The heart of any ignition system is the coil, battery voltage is supplied on the positive side, while the negative side is repeatedly pulsed to ground. Another pickup coil uses either a blue tyrap or black plastic connector body, and the third pickup coil uses a clear tyrap or a clear plastic connector body. Rigged it to the pick up coil, then to the primary side of the coil and to ground following a simple schematic. There were a number of different kinds of General Motors HEI modules: 4 pin module - electronic ignition, but doesn't do computer timing control, top left; 7 pin module (large) - electronic module that does timing control, used with coil-in-cap distributors, top right. As near as I can tell, the stock HEI coils were about 0. Theres not even a tiny spark does not even hurt to touch the end of the plug. Learn about this problem, why it occurs, and how to fix it. Unplug the Pick-up Sensor (lead from Distributor). C_: I have had this problem three times on HEI distributors, and it's been the module every time. Very rare to lose a pickup coil. You can get the relay in a junkyard. HEI is characterized by the incorporation of the ignition coil into the distributor cap for most applications. The cap has a section with two potential plug ins. time at high rpm. The W/G terminals use about the same spacing as the B/C terminals and the W terminal is the standard 1/4" blade terminal, but the G terminal is a smaller 3/16" terminal. Since diagnosing the module, pickup, and the coil of an HEI distributor is a little trickier than an old-school points distributor, we checked in with the folks at Performance Distributor to get some diagnostic input. Rotor/Cap problem resulting in voltage drop at spark plug terminals. We also shielded the 14 gauge wire we ran between the coil negative and the module to keep it from generating electrical noise into the mag pickup wire. Welcome to this website attending to preserve an American Legend compiled from a knowledge base collected from over 70 Years of experimenting, modifying, and just plain improving the. I think the distributor is not grounded properly. The only difference is that the number one firing position on the HEI distributor is in the 5:30 position such as the one on my 86 GMC pickup with a chevy 305 small block. (not really necessary but a good idea). 0 in it and a HEI ignition and Vacuum advance. Connect the one side of your test lamp to the battery POSITIVE cable. A vehicle's Toyota Pickup Ignition Coil takes low-voltage charge from the vehicle's battery and transforms it to an increased voltage so that the spark plugs can transmit a spark across the spark plug gap. Holding the HEI module with its convex side down or toward you, the upper left is terminal B, battery; lower left is C, trigger; and the two on the right are for the distributor pickup coil. I am not sure what it cost. When I go to set it lower the car will die and spit out the carb. With the exception of firewall clearance problems in various vehicles, this should apply to swapping most any GM points type distributor to HEI. So what the heck is burning up these 12v coils?. php(143) : runtime-created function(1) : eval()'d code. As near as I can tell, the stock HEI coils were about 0. If none are found, pull the shaft from the distributor. Coil and coil cover included. Tyler's Neighborhood Garage 14,108 views. Apparently the pickup coil starts shutting the module down once it gets hot if its bad/old. I wondered if the waveform is "conditioned" further within the ignition module, but have not seen anything to verify that, and am now of the opinion that the adv-ret is a "dumb" system, at least on the simple CDI's used on Ducatis etc. The HEI coil usually doesn't quit without some warning. The fuel injectors also fail to fire, which may lead to car not starting. HEI systems use a transistorized switch within the ignition module to generate high. The idea behind the HEI system was great, to incorporate an electronic ignition module, magnetic trigger device and ignition coil into a single assembly that would deliver a hot spark. I’ll cut to the chase I have no spark leaving the ignition coil if I put my multimeter on the gray wire going into the ignition coil I have around 12 V I have tried to back probe the red/green wire with it disconnected from the ignition coil and I can’t get my test light or multimeter to show me anything (coil is not bolted to engine. This trick works with any variable reluctor trigger using a permanent magnet, Ford, Mopar, GM HEI, etc. Using the Hayne's Manual Diagnostic Flow Chart, I tested for: spark at the plugs - No Spark spark at the coil wire - No Spark test the Coil - results all positive (the coil is new) Check voltage at terminals A & D of the Ignition Control Module - >10v at A, 10v at D (This is the problem) The ICM is new also. The major limiting factor of an HEI dist is the stock module, the ign coil and pick up are good for alot more rpm then what the stock module can handle. Take the cap off, unplug the wires going to the distributor, remove the rotor and the pickup coil is under the rotor and held. There are many people who either want to keep the vehicle's original engine or like the idea of getting performance out of something other than the ubiquitous V-8. There are three main components in an HEI: the ignition module, the pick-up coil and the integral high-tension coil. We recommend a complete package for best results. There is a module checker but most service places don't have one. remove pick-up coil module connector & turn on ignition switch connect test lite to +12v source note: momentarily touch the other test lite lead to the module's small terminal -spark at hei tester indicates pick-up coil not working : remove dist. He built it using an Oldsmobile HEI which turned the correct direction. Checkout DIS ignition systems are much better in terms of reliability with less moving parts to fail however there is still a handful of us that cling onto old school distributors. It ran ok for a while then started acting up again, I believe this time the symptoms pointed to the pickup. Even though there's HEI pickup coils with reversed MAGNETIC polarity, the wires are crossed to provide correct ELECTRICAL polarity to the module. Which pickup coil wire goes to which module terminal is determined by trial and error: If engine is difficult to start or runs poorly after installation. Ignition Systems Cheat Sheet for the Chevy Small Block For our budget-oriented purposes we find that conceptually at least, GM's HEI distributor is a near ideal choice in terms of practicality. The pickup coil usually fails from vacuum advance motion of the 2 wires. 2 wires from each inductive pickup to each HEI and 2 wires from each HEI to each GM coil. The HEI design incorporates the vacuum advance mechanism, the ignition coil and a permanent magnet assembly that has a pole lined with teeth and a pick-up coil. I know its getting fuel. Ignition Upgrade For Jeep 304 & 360 CID V-8 AMC Engines. The HEI has enough power to knock you into the middle of next week. Cap and rotor are indistinguishable from performance parts in both general weight and overall construction. Terminal "W" provides a control voltage to the pickup. The negative side of the coil will be the wire that goes to the points or electronic ignition module. By Bill Hanlon, edited by Larry Gorden. It replaces the stock ignitors, coils and spark plug wires with readily available GM parts. The most common of the bunch is the ever reliable GM HEI internal cap. The ignition coil, a vital component of any vehicle's ignition system, is responsible for providing electricity to the spark plugs. Compatible with Coil Wire Attachment: HEI in-cap. Note that installing an HEI distributor and installing a Pertronix conversion in a points distributor are two completely different animals; if you're installing an HEI distributor (large cap, integral coil), you MUST supply a full 12 volts to the "BAT" terminal on the cap, which requires running a 12-ga. When I go to set it lower the car will die and spit out the carb. The black pickup wire is connected to terminal G on the HEI module. Rigged it to the pick up coil, then to the primary side of the coil and to ground following a simple schematic. We give our HEI Distributor a tune-up in the February 2013 issue of Car Craft Magazine. Be sure to move the connector around while you resistance test, as the pickup coil wires can break right at the terminal in the connector, and make intermittent contact, depending on where the vacuum advance moves the pickup in its. Remove the rotor and disconnect the pick-up coil leads from the module as described in the Ignition Module section. Avalanche 2500 Ignition Coil. The high voltage pickup was a capacitive clamp that clipped unto the coils high voltage lead, but developed huge problems for them back in 72 when the HEI first came out. But with multi-coil ignition systems, a single coil failure will only affect one cylinder (or paired cylinders in the case of waste spark DIS systems). An HEI module is designed to be controlled by an inductive pickup. Early 1985 models still may have the old style distributor and will have to be removed. Terminal "W" provides a control voltage to the pickup. I just kind of guessed on what the coils/pick-up coil ohms read. If you do not already have a proper locking HEI power plug (or tach plug if you need one), they are available separately. Ignition Coil Resistance Check. Aveo Ignition Coil. An HEI module is designed to be controlled by an inductive pickup. I have a 88 model cobra with 350 engine and I found out I have a automotive hei distributer and I am sure for safety reasons I need to change to a marine electronic distributor but what kind would be best and what type of coil and also need to upgrade broken ESA module. i got my meter out and read across the pickup coil, it tested good. When vacuum is applied to the canister it pulls the rod, and this pulls on the pickup coil. 2 wires from each inductive pickup to each HEI and 2 wires from each HEI to each GM coil. This may be caused by the EGR valve tube going into the intake plenum being located so closely to the distributor. temperature Of the system reduced, further increasing the reliability and life of the HEI system. Replaced coil, worked great for a few days then started skipping intermitantly. + Items in search results. Truck is bone stock except a Street Fire 8362 HEI distributor. Under normal driving the HEI is powered by +12v from the ignition switch. Had to stop by Sears to replace my 3/8" ratchet, and picked up a punch set too The job to replace that pickup coil wasn't as bad as I thought it was going to be, just FYI. I wondered if the waveform is "conditioned" further within the ignition module, but have not seen anything to verify that, and am now of the opinion that the adv-ret is a "dumb" system, at least on the simple CDI's used on Ducatis etc. Distributor comes with cap rotor dragon fire coil dragon fire hei module housing adjustable vacuum advance canister and proper drive gear. For starting purposes, there was a 12 volt override supplied by a separate wire from the "R" terminal on the starter solenoid to the ignition coil. The ignition coil, a vital component of any vehicle's ignition system, is responsible for providing electricity to the spark plugs. The coil can be check with a. Set the engine to #1 TDC. Powering them through the original wiring will mean that the Ballast Resistance will still be present. As a replacement distributor for small or big block engines, this two-piece small body unit doesn't have the clearance problems of some replacement HEI distributors due to its external coil. General Motors HEI Ignition Control with MegaSquirt-II. An HEI coil has very low primary resistance, typically in the range of. I had replaced the coil, the old one was ohm'ing high and my backfire came back. The pickup coil sends the signal from the ignition module to the spark plugs during the ignition process. Remove the distributor from the engine. In my Jeep CJ-7, I didn't have one of those rare factory tachs so I chose the Autogage Tachometer 3-3/4 inch with an 8,000 RPM range in a black finish to be mounted on the steering column of the Jeep. But when I installed a newerized 2F with $1400-1600 worth of parts and machine work, I installed the "Big Cap" and think the performance is at least as good as the HEI. note: the pertronix ignitor is effectively a "go" or "no" system. time at high rpm. (One coil set has the MAGNETIC polarity reversed in relation to the other) The MAGNETIC polarity does seem to be related to starter position. FYI #2:If you have a Ford vehicle and desire an HEI, there is a company which sells an HEI head on a Ford shaft. The coil can be check with a. that is on the front right of the conector pad. This trick works with any variable reluctor trigger using a permanent magnet, Ford, Mopar, GM HEI, etc. The only unit that tested bad was the control module that I had tested at AutoZone. Disassembled HEI (Not shown: roll pin for distributor gear, spring clip to retain pickup coil; screws to retain ignition coil and cover, and plastic grease reservoir seal. Be the first to review this. You shouldn't need a spark box because thee coil is located in the dist. Any resistance measurement less than infinity requires replacement of the pickup coil. This is a one wire small cap HEI with a remote coil. HEI caps have the coil built into them , an all in one ignition as compared to a external cylindrical coil. If you need to just test the distributor's pick up coil, your starting point is TEST 7: Testing The Pick Up Coil Signal. Buy Your Corvette Performance Parts From Ecklers: 50 Yrs Of Corvette Experience. The cap has a section with two potential plug ins. Welcome to Heidts Hot Rod & Muscle Car Parts. When C first opens, the ignition coil produces a spark. Starting in 1972, Chrysler began using a revolutionary new electronic ignition system. Here is a link to the entire article. Applications include: 283, 305, 307, 327, 350, and 400 small blocks. Non HEI electronic ignition systems address this problem with a high performance coil with a relatively low primary resistance that can produce a usable spark under low battery conditions, thus allowing you to increase the spark plug gap to perhaps. The coil directly feeds a plug in a boot underneath, and there's a plug wire (replaceable) to a second plug. By Bill Hanlon, edited by Larry Gorden. Automotive Group provides the best suspension and related chassis component solutions to create a superior buyer experience for the professional and hobbyist car builder or installer. Figure 5 Primary Wiring to a GM HEI with a 4-Pin Module (Magnetic Pickup Trigger). The reading should be infinite. There are three main components in an HEI: the ignition module, the pick-up coil and the integral high-tension coil. When a vehicle will not start, misses often or stalls frequently, its. We recommend a complete package for best results. Contributed By: Gary Boyd Ed Note: Originally posted on the ORC Bulletin Board by 'Teamrush'. An automobile's ignition coil provides the high voltage needed by the ignition system to fire the spark plugs. Putting a brand new distributor or coil on a vehicle with old or worn spark plug wires and old/worn spark plugs is simply silly and will most likely cause you to replace the same parts over again. When converting to an HEI there are three issues which must be addressed. In my Jeep CJ-7, I didn't have one of those rare factory tachs so I chose the Autogage Tachometer 3-3/4 inch with an 8,000 RPM range in a black finish to be mounted on the steering column of the Jeep. Test em, if all looks good, take the module to a parts store, they test em for free. Voltage output should be very small when the two wires are connected to the meter, while the engine is being spun over with the starter motor. i have problem with pickup coil going bad on 85 chevy van c20 5. Very rare to lose a pickup coil. Checking & Replacement Of The HEI Pick-up Coil. I know its getting fuel. Rigged it to the pick up coil, then to the primary side of the coil and to ground following a simple schematic. The GM HEI module can easily be mounted remotely. still no spark. I have also replaced the Coil Wire. Inexpensive. I now have 30K on the motor and it runs great except for one problem: The module in the HEI distributor keeps failing. To upgrade from points to an HEI, begin by obtaining a known HEI, or freshen one up that is in good shape (i. -Davis Unified Ignition is the flagship product, and is ran on vehicles worldwide. The trigger coil tells the black box when to trigger the spark. Accel Hei Ignition Coil. Rotor/Cap problem resulting in voltage drop at spark plug terminals. Rare until high miles, but fatal when it happens. How to Test an Ignition Coil. When an HEI pickup coil is triggering an external "Spark Box" like an MSD. This is a one wire small cap HEI with a remote coil. (View of an upside down HEI coil) A - coil secondary output terminal (where the carbon brush spring makes contact). From Carb to EFI, with Ignition Control, on just a fistful of dollars… Objective of this Article This article will walk you through the process of installing a MegaSquirt EFI system on a classic carb’d vehicle attempting to go the least expensive route possible using junkyard parts and DIY ingenuity.