to purchase and install distributor boots and terminals for the spark plug wires to correctly fit the UNILITE® Distributor cap. Wire-up temp w/ alligator clips and use a multimeter to verify supply voltages. From my research it seems that people are converting to HEI ignition, which I'm also not very familiar with but I think I can do the conversion if someone could give me a list of the exact parts they've used to do this job. Would crank normally but not start. We tried a new module, new coil and then when we were completely fed up a new distributor - when all that didn't work we went down to basics and yanked everything we didn't need, which in this case was the Tach wire. Anybody have any ideas why I am still getting no. Can't I just lock out the distributor and then ensure the rotor aligns with the Number 1 spark plug terminal and make final adjustments to sync timing with the ECU using a timing light? Or, could I wire a stock GM small cap HEI to do the same? C. The old coil witch was really only 1,300 miles old had a scroched wire so I thought that was the problem. The HEI distributor has eliminated the need to do roadside tune ups to a point-style distributor. Replace HEI distributor and no start. The Cadillac Northstar ignition system on a factory 1993-1999 Northstar engine is composed of an ignition module, four coils, a crankshaft trigger wheel, two variable reluctance crankshaft position sensors, and a cam sensor used for SFI operation by the PCM. Full battery voltage is present at the battery terminal of the distributor in either the "START" or "RUN" position,as no ballast resistance wire is used. No matter which ignition you use, getting the spark energy from ignition coil to spark plug gap is the OBJECTIVE, SO wasting the spark energy with a cheap set of plug wires is counter productive. At first the #2 plug started sparking but not the 1st but now neither spark. The control module was able to provide more spark energy to the spark plugs with better timing control than mechanical breaker point ignitions, which. The second failure was outright no spark. No spark at coil when cranking so I tested the box using the jumper wire method with the coil wire to ground. Coil showed no ohms between ground and each coil wire term, but got a zero reading between the two coil wire leads. Secondary, (batt wire to carbon pick up on bottom of coil was OL. With the exception of firewall clearance problems in various vehicles, this should apply to swapping most any GM points type distributor to HEI. No spark, possible failed items in order of their probability: A. Firing Order: 1,2,4,3 (counter. Spark amplifiers. new hei distributor has no spark will not start dropped in this motor had it running for a bit then lost spark - Chevrolet Cars & Trucks question. ) Moisture inside distributor – remove cap, dry off & spray with WD40 B. Re: No Spark - MSD 6A - HEI Your intial post talked about a "4 pin module" and you described how you hooked it up to the pickup signal pins of the MSD box. Wire-up temp w/ alligator clips and use a multimeter to verify supply voltages. If a normal spark occurs, then the problem is most likely not in the ignition system. Testing a No Spark No Start Condition. The ignition is a GM HEI, with MSD's ultimate HEI kit that includes the new module and coil. A feature of induction ignition is the slightly longer spark duration while the coil collapses. The only 2 things I can think of are:-It might have a short in the wiring going from the ignition switch to the coil, or a bad ignition switch-The distributor pickup mounted under the advance weights might have somehow gone bad. A couple of other hings I have found as I have worked on these systems for decades, they like good spark plug wires, 7mm is OK, magnetic suppression, spiral core, and, stock coil is fine (they have no drivers for increased spark over a brand new set of points on their first spark), and, keep the spark plug gaps down to. Distributor Boot Material: Silicone. I have replaced the p/u coil, distributer cap, rotor, ignition module & ignition coil, but nothing has solved the problem - still no spark. Too hot spark plug will fracture due to excessive heat and, more critically, will become a hot spot in the combustion chamber that will cause pre-ignition and detonation, sooner rather than later. The ignition is a GM HEI, with MSD's ultimate HEI kit that includes the new module and coil. the accel micro switch was shot so i replaced that. The engine was running good but now i have no tach signal and it won’t start i have a (DUI) distributor i do not have the timing control conected because it has a hei coil i check the wiring and replaceed the coil still no tach something is telling me there is something wrong with the unit. With an ever-expanding line of SuperCoils and all the spark plug wires, tune-up kits, and fuel injectors hot rodders have trusted and relied on for years, ACCEL is constantly developing innovative new products designed to push power, speed, and performance to match advancements in automotive technology. ULTI-SPARK N ® SMALL RED NOTE: The GM Ignition Module is removed and replaced with the supplied PN 8861 Wire Harness. I am getting full battery voltage to both sides of the coil (a Ford coil from a Crown Vic with electronic ignition- have tried two plua the original coil). Ignition Coil Test. I use a mag in our sprint stuff and they won't light above. Review for otc 6589 electronic ignition tester. Attempting to diagnose. Ford FE Engine Ignition Systems Guide- Build Max Performance for the 332, 352, 361, 390, 406, 410, 427, and 428 Engines and How to Stroke Your Engine. Make sure your distributor rotor points to #1 spark plug terminal in distributor cap. Code 42 - Electronic Spark Timing Circuit (EST) Circuit Description. Now it could be the coil, but mo. Driven properly they can also be used to create a Jacobs Ladder. How to replace a hei Distributer and test it. It will have 3 wires running into it from the harness, 2 from the distributor and 1 spark plug wire. Open or shorts on CKT 430 from distributor module to PCM/ECM. Switching to a hotter plug may help prolong plug life somewhat, but no spark plug will survive long under such conditions. Ford Inline Six, 200, 250, 4. i was wondering since the motor came with points stock, the spark plugs were gapped for a points distributor and the motor now has an HEI dist should i gap the plugs at 45? any thoughts? thanks. To check you need to line up cylinder number 1 to top dead center (use the timing mark). This time I discovered that I have no power going to the spark plugs (using an inline spark tester). Ok so i was given some advice a while back to upgrade my stock distributor in my 69 nova to HEI, ive been working on that most of the morning, and once everything was set up, i tried to start the vehicle and the car did not start, I used a timing light and hooked it up to my spark plug wires and noticed that i had no fire going through the wires. replace or service the coil. The plug acts as an earth, as long as it has any weak spark or carbon the light will come on. Truck ran fine before the swap. (DIS) Distributorless Ignition Systems are controlled by the on-board computer. This pickup is subjected to a lot of heat. The car will crank with no spark then after 2 seconds it'll get a weak one (it's orangeish not blue and inconsistent) then fire up. In this video Ray Bohacz explains how to diagnose and solve common problems associated with HEI ignition systems. This is pretty simple so don't get scared. Bought a new box - a Digital 6AL (nice, slimmer design). I still have no spark running from the either coil to the distributor. Ran fine until it kept dying when you put it into gear. Help, engine just quit, no spark Ignition 2 HEI. Replacement spark plugs can get expensive to. I have a question I got a brand new hei distributor everything new the coil the cap the rotor the shaft all of it. The team has shared all the finest moments in the numerous accolades for its people, its products, and its approach. Lars was correct, you want an ignition source and not an accessory feed source for the distributer power wire. HEI to UNILITE ® Boot Terminal Kit. Get fire to your engine with spark plug wire sets from Speedway Motors. Locate the spark plug wire on the original distributor cap that that is used to. Trying to find details regarding Ford Hei Distributor Wiring Diagram? you are right here. If you have no spark check for 12 volts at the coil, if you have power then there is a problem either with the coil or the ignition module in the distributor. Holley® has been the undisputed leader in fuel systems for over 100 years. For example, Mallory's E-Spark accomplishes this by using an optical switch to control a signal that fires the coil. Ordered a new 8252 coil. Replied by blat88 on topic Car has weak spark- need help finding source I'm assuming I have a new wire from coil to cap, I got a whole new distrib already put together. The Mallory Unilite distributor uses an infrared light lens and a sensor between which a wheel with tangs, called shutters, passes. Found no spark. If there is now spark, the coil is at fault. These type of systems require coils meant for "induction" ignitions (they have a higher resistance typically than CDI coils). I removed the tach wire and it made no difference. Just sharing some info that I hope helps someone. The secondary circuit includes the secondary winding of the ignition coil, spark plugs, and on some vehicles a distributor and/or spark plug wires. Using the optional All-Ignition GM pigtail or your own pigtail, run a 'hot' wire (when in the 'on' position). Engine was removed from car 3 years ago, and has just gone back in after a full rebuild - nothing changed in the ignition system though. Wire-up temp w/ alligator clips and use a multimeter to verify supply voltages. No distributor means there is no distributor cap or rotor to replace, and no troublesome vacuum or mechanical advance mechanisms to cause timing problems. For the HEi. Check for fuel system problems, or fouled spark plugs. bought a new one, put it in, and still no spark. One of the things I like about these old tractors is being able to fiddle with things like points. Or, it might be a bad battery, starter, ignition switch or safety circuit, or anti-theft immobilizer system if the engine won't crank. To check you need to line up cylinder number 1 to top dead center (use the timing mark). Comes in Black, Red, Blue, Yellow and Clear. If, for some reason you have no spark coming from your distributor, the following will help you check and test the installation, connections, and components, of the unit so that you can get your engine running. Substitute another coil and test again. No box or coil. The handheld says zero RPM while the car is cranking. I know this sounds stupid but are you plugging it into the right terminal on the hei? nothing a bfh cant fix SBC HEI Power to Distributor but No Spark Aug 2, 2016. The big question is why. Truck ran fine before the swap. Use an inline spark tester to verify spark ($3 Harbor Freight). No spark coming on of distributor power is going to it but no spark. not the ignition system. The firing order for the classic chevy small block with a breaker points ignition is no different than the newer HEI electronic ignition. I am getting 12v at the ignition coil from the ignition. I have no spark on a HEI Distributor for a 350 V8. However, on high boost turbo engines a large plug gap may result in the spark being blown out and for these engines a reduction in the gap is usually specified e. At first the #2 plug started sparking but not the 1st but now neither spark. I had it towed home, tomorrow I will check if it's getting 12v at the coil. One of the wires UNDERNEATH had broken so I was getting no spark. I am not getting any spark at all. I checked the coil, no spark going out of it. For a replacement distributor to fit your car, truck, or SUV, visit O’Reilly Auto Parts. After all of that there is still no spark. Distributor Boot Material: Silicone. Rewired it exactly the same with the + from the now removed coil, which shows to have power into the party. HEI's are as easy as pie to fix. ) If the tester stays OFF while cranking, there are 3 possibilities: Points shorted (stuck closed). To perform the tests shown in this chapter, the HEI's spark output was dumped into a chamber pressurized with pure nitrogen at some 142 psi. Snap the two side clips into place and you're done. It will automatically advance the timing on acceleration a specific amount and retard the spark when decelerating and starting. Get everything you need to fire up your AMC V8 with a complete HEI ignition kit from Top Street Performance. 1 cylinder location and the rpm of the engine. The team has shared all the finest moments in the numerous accolades for its people, its products, and its approach. No spark, no start condition. The boots are made from a high temperature silicone compound and feature a gray finish. You'll test the following components: ignition control module, spark plug wires, distributor cap and rotor and ignition coil and pick up coil of the GM 4. I had gotten the engine started briefly , timing was way out of whack and the engine was running poorly, no no spark again. I tested the pickup coil with a multimeter and gave a reading of 744 ohms, which according to the internet is ok. Technician A says to check for spark from the ignition coil first when diagnosing a no-start condition. Distributor Boot Material: Silicone. Just find a mid 70's Camaro or similar that had the HEI system. Ford Inline Six, 200, 250, 4. It will automatically advance the timing on acceleration a specific amount and retard the spark when decelerating and starting. How to Diagnose a Loss of Spark in Your Car Engine. The ignition is a HEI ignition and has the coil mounted in the distributor and also a vacuum advance distributor. I replaced the battery and tried to start it. If there is no spark, but the arc color indicated is Red: There is a faulty ignition coil. Still nothing. This is pretty simple so don't get scared. OLD DISTRIBUTOR REMOVAL. the coil and dyna-module are inside the distributor, no spark box is necessary. If a normal spark occurs, then the problem is most likely not in the ignition system. March 2006. 0 in it and a HEI ignition and Vacuum advance. The voltage to the HEI "BAT" terminal must be the same as the battery voltage, or the spark will be very weak, or no spark at all. Maintaining your distributor on your race car is critical to maintaining peak performance. Attachments:. Disconnect all existing primary wiring from ignition system. DUI-240001 Distributor cap and coil by DUI for HEI distributors. If the pigtail is broken, the advance plate may only be intermittently grounded. So far I've always found the module to be the problem, providing you have power to it. Distributor Cap / Rotor / Coil / Spark Plug Wire Kit (2) Distributor Cap and Rotor (57) Flame-Thrower IMCA-Approved Race HEI Distributor Kit; Small Block Chevy. Author Topic: "Ready to run" (HEI) and no spark (Read 3493 times) It's basically a distributor with a small self-contained HEI module built onto it. Firing Order: 1,2,4,3 (counter. To perform the tests shown in this chapter, the HEI's spark output was dumped into a chamber pressurized with pure nitrogen at some 142 psi. I've got the correct pigtail for the HEI, wired red wire from pigtail (battery side) to the blue wire from the ballast resistor, test light shows it's hot when ignition is on (testing on the new connector) Got no spark. Contains a Pair of 23" Universal Cut to Fit Cables For use on Breaker Point & Electronic Ignition. However, only 4. Add-on ignition spark amplifiers allow for the conversion of a HEI distributor system to a VHEI (Very High Energy Ignition) system, further increasing the net output energy of a HEI spark. The mechanic came ove and was sure it was the ignition module. Applications include 283, 305, 307, 327, 350, and 400 small blocks, and 396, 427, and 454 big blocks. The HEI distributor has eliminated the need to do roadside tune ups to a point-style distributor. If converting from a point style ignition, all primary Ignition resistance should be removed. If there is no spark, but the arc color indicated is Red: There is a faulty ignition coil. Direct shorts in the ignition or electrical system Trying to start motor with battery charger hooked. 055" Only pulls 2-3 amps (other systems draw 10+ amps) Key distributor parts are polished and lubed for smooth operation; Available in "Stealth" version with no decals and a black cap for a bone stock appearance. These include marking the unit before dismantling, the care required during dismantling, checking the pick-up with an Ohmmeter, and examining the ignition module, which replaces the breakers by turning the coil on and off, and the remedy for overheating that causes intermittent spark. GM Racing D. but there is no spark going to coil evan replaced coil wire the crank sensor,cam sensor,ignition sensor also the "brain"or electric box on side wall still wont start. With the engine off, disconnect the 4 pin connector going to the lower rear of the distributor. I suggest you keep or find an AMC Duraspark electronic distributor, do the TFI upgrade, and use a GM HEI ignition module for better reliability. Some later HEI distributors used five terminal modules, the fifth terminal was used to retard timing based on sensors and circuitry external to the distributor. All Bosch ignition coils are built to achieve or exceed OE specifications and are known industry-wide for their reliability and performance. i bought it off a bloke when i bought the engine and it was sparking fine before i rebuilt the motor, now trying to start it for the first time i cannot get spark. No distributor means there is no distributor cap or rotor to replace. !! 2!! The$following$instructionsare$summarized$from$a$variety$of$sourcesincluding$the$AC$Delco$installation$guide,$ Mercruiser$ignition$instructions$and$other. Steve Rice and Farrar Hudkins are using stock Bosch ignition modules with their HEI. These distributors cannot be used on non-computerized engines. As you can see here, the stock ignition produces a single, weaker spark. If, however, there is no spark or a weak spark, then further ignition system testing will have to be done. And, product development is a continuous process at Performance Distributors. The Cadillac Northstar ignition system on a factory 1993-1999 Northstar engine is composed of an ignition module, four coils, a crankshaft trigger wheel, two variable reluctance crankshaft position sensors, and a cam sensor used for SFI operation by the PCM. Watching with a graphing meter shows no ground to the coil during cranking. the accel micro switch was shot so i replaced that. If you've come to this procedure, you probably suspect that you have a no spark condition. Most Taylor wire kits come with both sets of distributor cap connectors. There are two primary distributor-cap plug wire connections in use today. Older systems used a points-and-condenser system in the distributor, newer (as in most we'll ever see anymore) use an ECU, a little brain in a box, to control the spark and make slight changes in ignition timing. 6i Cavalier) is wired to the same pins, but the pins are grouped differently. Dozens of distributors available for most makes and models. but there is no spark going to coil evan replaced coil wire the crank sensor,cam sensor,ignition sensor also the "brain"or electric box on side wall still wont start. You need a kick ass ignition to fire at. Rotor is turning fine, the wires are hooked up correctly from the distributor to the coil. Performs misfire free up to 6500 RPM. and I still have no spark! On my South African model, the distributor connector wires are completely different colours. Let’s talk about the ignition system in your Corvair. GM parts are, on an average, far cheaper than Jeep parts. Get everything you need to fire up your AMC V8 with a complete HEI ignition kit from Top Street Performance. 99 from Harbor Freight) in line. This will cause loss of spark as the advance plate moves or maybe no spark at any time. Get everything you need to fire up your Ford Small Block with a complete HEI ignition kit from Top Street Performance. The distributor also disburses current. Hey guys, im so close to firing up my 308 but i cannot seem to get a spark with my procomp HEI distributor. I installed a new Edelbrock Carb, New spark plugs and wires, replaced points style distributor with HEI style distributor. The next step is to remove the spark plug wire that attaches to the middle tower of the distributor cap (this is the spark plug wire that comes from the ignition coil) to test for spark there. Clip the timing light's sensor wire to the #1 cylinder spark plug wire (driver's side, front spark plug). Page 1 of 4: How to test the Ford Ignition Coil (4. The car cranks and cranks but no attempt to start even with starting fluid. There are many aftermarket high-performance HEI coils available too. I have a question I got a brand new hei distributor everything new the coil the cap the rotor the shaft all of it. Put in a new ignition Mod and tested the coil. Though no production version of the original HEI system is in use today, it was clearly a design that revolutionized the industry and laid the groundwork for today’s modern ignition systems. Wire-up temp w/ alligator clips and use a multimeter to verify supply voltages. Over time your outboard’s electrical components can be effected by wear, corrosion or system leaks. This is a tricky one but I’ll bet the distributor is out of phase. Thanks, just kinda being silly, well maybe not, been a Mopar guy for 30 +yrs, gotta learn some new stuff. No distributor means there is no distributor cap or rotor to replace, and no troublesome vacuum or mechanical advance mechanisms to cause timing problems. Yours is a good article. HEI Performance Replacement Distributors by Taylor Cable Products. ) If the tester stays OFF while cranking, there are 3 possibilities: Points shorted (stuck closed). HEI Ignition swap on Pontiac/GMC. With an ever-expanding line of SuperCoils and all the spark plug wires, tune-up kits, and fuel injectors hot rodders have trusted and relied on for years, ACCEL is constantly developing innovative new products designed to push power, speed, and performance to match advancements in automotive technology. Another reason for this is the self. If you hold it close, you should see a jump. Let’s explain how an Multi-Spark Ignition works. The ignition system is an integral part of any engine's performance, just a much as the fuel delivery is, whether it is carbureted or fuel injection. Each time you break this short, a spark should jump from the coil wire to ground. With a stock ignition system, one small spark is all that is necessary to combust the mixture of oxygen & fuel in the cylinder. Still no spark, no start. The key components are not the ignition module, they are higher coil input voltage, a high ratio winding coil, and much wider plug gaps. I have12 v from a new battery to the ignition switch. It may be having a problem with the distributor. Stock GM HEI Distributor & Coil in a vintage 1969 Camaro Z-28. To check you need to line up cylinder number 1 to top dead center (use the timing mark). I ran down to Advance and got a new coil and still no spark. Together with the spark timing signal [pin E], Ref (tach) [pin R], and crank override [pin B], there are 7 pins in total ). I replaced it with an hei i had laying around. 1967 - 1974 Firebird or Trans Am Breakerless SE Distributor Ignition System Upgrade Conversion Kit This new BREAKERLESS SE single wire ignition kit for your Firebird or Trans Am is designed to convert all 1957-74 GM V8 engines equipped with window-style distributor cap, screw-on type rotor, stock coil, and single or dual points, to solid-state HEI electronic ignition. The spark is weak and from what I can tell I'm not getting the full voltage to the HEI. Turns out my problem really was no (intermittent ) spark. No distributor means there’s no distributor cap or rotor to replace, and no troublesome vacuum or mechanical advance mechanisms to cause timing problems. The car is turning over, but won't start - I did see that I am getting fuel, but no spark. The ignition coil, a vital component of any vehicle's ignition system, is responsible for providing electricity to the spark plugs. I checked the plugs they look good but no spark. A bad coil, faulty electronic module or a bad magnetic pickup coil. Their built-in ignition module and high-energy coil mean that no external spark boxes or coils are needed; with just one 12 V wire hookup, you're ready to run. I do recommend this tool. The only unit that tested bad was the control module that I had tested at AutoZone. so i wired up an ebay hei as per instructions, still no. I ran down to Advance and got a new coil and still no spark. The HEI distributor has eliminated the need to do roadside tune ups to a point-style distributor. Just make sure your phone shoots video. it should be ground orright on the. 6 ohms, which other threads say is right. As you can see here, the stock ignition produces a single, weaker spark. The big question is why. Any voltage leak within the wire can cause the spark to jump before it reaches the plug, causing a misfire. Of course you can use a distributor from 74-79 cars and trucks if you can find a good used one. GM IGNITIONS GM Large Cap HEI Distributors There are three different large cap HEI distributors. The problem is I can't get it to fire. If the engine has one coil for each engine cylinder (as with some outboards and. I have an 84 Sierra with a small block 400 in it with HEI. One day it came in on a tow truck, no spark. Troubleshooting a faulty or inoperative ignition should always use a logical approach. Running a pro billet MSD distributor with adjustable rotor and MSD 6AL box. not the ignition system. Just find a mid 70's Camaro or similar that had the HEI system. The distributor spark plug on a GM HEI distributor provides the electrical spark necessary to ignite the gasoline inside a combustion engine. Have a 70's 327 in my 67 malibu. If, for some reason you have no spark coming from your distributor, the following will help you check and test the installation, connections, and components, of the unit so that you can get your engine running. When the system is running on the Ignition Module, that is, no voltage on the by-pass line, the Ignition Module grounds the EST signal. Ford FE Engine Ignition Systems Guide- Build Max Performance for the 332, 352, 361, 390, 406, 410, 427, and 428 Engines and How to Stroke Your Engine. to purchase and install distributor boots and terminals for the spark plug wires to correctly fit the UNILITE® Distributor cap. The most common symptom of a faulty ignition coil is when the car runs for a while and the engine dies abruptly. The handheld says zero RPM while the car is cranking. 1967 Corvette - MSD Spark Plug Wire Set Small Block With HEI Distributor Combined Cancer/Birth Defect WARNING This product can expose you to chemicals including Cadmium which is known to the State of California to cause cancer, birth defects or other reproductive harm. The coil is sending spark to the distributor but the distributor isnt sending it out. If you want to bench test an HEI, would have to mount 8 spark plugs to a plate with each distributor lead connected to each one, have a 12 volt supply, and a means to turn the shaft. Just make sure your phone shoots video. DUI-240001 Distributor cap and coil by DUI for HEI distributors. This figure shows the exploded. On this bike it had mototech ignitionwe removed it and put the SR ignition back on it ran great for two races then lost spark. My variable speed lathe does a good job at that. No spark at coil when cranking so I tested the box using the jumper wire method with the coil wire to ground. If the pigtail is broken, the advance plate may only be intermittently grounded. The signs of a failing ignition coil include backfiring, starting issues, lowering gas efficiency, engine misfiring, vehicle stalling and worn out spark plugs. On an HEI distributor, all you need is a full 12 volts that is ignition controlled, by that I mean is hot when the key is on, and no power when the key is off. The distributor is a cheap ebay one. If there is no spark, but the arc color indicated is Yellow: replace the points and condensor. A DIS no-spark condition for all cylinders is almost always a primary circuit or module problem, which we'll get to in a minute. The Hot-Spark electronic ignition conversion kit replaces breaker points and condenser in the distributor to provide rock-solid reliability. It was turning over just fine, just no spark. so i wired up an ebay hei as per instructions, still no. Thanks, just kinda being silly, well maybe not, been a Mopar guy for 30 +yrs, gotta learn some new stuff. If you have a good spark, check the other plug wires. I pulled the trigger out and tested it but it seems like it works ok. com offers a wide variety of distributor parts and accessories including HEI Distributor Service Parts to help your distributor deliver that spark you need to win. Please help. It not hard to change it over to a regular HEI distributor without the ESC system. You're fine with the Delco EST ignition on your Yamaha. No stumbles, just cranking for as long as I try. Found no spark. Now it won't start. I installed a new Edelbrock Carb, New spark plugs and wires, replaced points style distributor with HEI style distributor. You don't even need kilobuck 'scopes, module testers, or computer interfaces. Ignition Coils: Ballast and Non-Ballast Ignition Systems. One day it came in on a tow truck, no spark. Wire-up temp w/ alligator clips and use a multimeter to verify supply voltages. All are good. A well-tuned HEI can produce up to 40,000 volts, compared to about 18,000 volts for the points system. I am getting an orange spark to all 8 leads and getting 12 volts to the feed side of the coil. I pulled the trigger out and tested it but it seems like it works ok. The team has shared all the finest moments in the numerous accolades for its people, its products, and its approach. The only 2 things I can think of are:-It might have a short in the wiring going from the ignition switch to the coil, or a bad ignition switch-The distributor pickup mounted under the advance weights might have somehow gone bad. Any voltage leak within the wire can cause the spark to jump before it reaches the plug, causing a misfire. The distributor is a cheap ebay one. I am not getting any spark at all. Distributorless ignition systems (DIS) have been around for almost a decade now, and have eliminated much of the maintenance that used to be associated with the ignition system. 1985 EZGO Marathon golf cart suddenly has no spark. I checked for voltage at the HEI distributor BAT terminal and it was fine. I am getting full battery voltage to both sides of the coil (a Ford coil from a Crown Vic with electronic ignition- have tried two plua the original coil). Switching to a hotter plug may help prolong plug life somewhat, but no spark plug will survive long under such conditions. A spark is a spark is a spark, and it either ignites the fuel or it doesn't. We then changed black boxes,coils only to find the stator in the mag had taken a powder so we. No periodic lubrication is necessary; engine oil lubricates the lower bushing, and an oil-filled reservoir. On the left is the most common HEI-style distributor cap male connector. (DIS) Distributorless Ignition Systems are controlled by the on-board computer. Disconnect all existing primary wiring from ignition system. Truck was completely restored 20000 miles ago so mechanically it's a new truck. Ignition Coil High Voltage Display: A common automotive ignition coil can generate an output voltage on the order of 30,000 volts.