we swapped out the cap and rotor from my sonoma onto it, but it made no difference. Bosch HEI Distributors from 6 cyl EFI VK's will fit any red/blue/black Six, but these distributors have very limited centrigual and vacuum advance so don't give the best results. If you have put fuel to it to no avail, then you probably dont have spark. The HEI distributor has eliminated the need to do roadside tune ups to a point-style distributor. Tried a second one. Test Spark Plug and a jumper wire. 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. With an optimum air/fuel ratio, there is a wide range of spark that will ignite the. It stopped running when it wanted to shift, but that had nothing to do with it when I pulled a spark plug wire and no spark. We wired the HEI module and coil according to the schematic, grounded the steel plate, the HEI mounting plate, and the distributor all to a 12-volt battery, and spun the distributor to create a hot spark right off the coil wire. The simple solution to getting the ignition system on par with the other high performance componentry is to add an MSD Capacitive Discharge box to my ignition system. Can you see if there is spark from the coil wire?. and insured it was aligned with the cap and rotor. An HEI is a reliable source of good spark, however when it dies, it dies in a hurry, not slowly like points-based ignition. Wouldn't start tuesday morning, plenty of fuel, no spark. A standard Permashield ignition wire set goes into every Tri-Pac tune up kit. The control module was able to provide more spark energy to the spark plugs with better timing control than mechanical breaker point ignitions, which. #B4007-001, Short Mount Distributor Cap Clip used on Delco Remy Distributors. I replaced the battery and tried to start it. You don't even need kilobuck 'scopes, module testers, or computer interfaces. I have no idea why it won't crank. 05-25-08 08:21 PM - Post# 1440985 Alright all, quesiton. Instructions for Installation of Summit HEI Distributors Equipped with an Adjustable Vacuum Advance Kit 1. Stock GM HEI Distributor & Coil in a vintage 1969 Camaro Z-28. With distributor in hand you had a consistent spark so power upstream is likely decent. The all in one DUI (Davis Unified Ignition) has everything you need for the ignition system in one simple unit. However, the cost of a 123 distributor is about $500, whereas a Pertronix or similar triggering module is typically $70 or less. 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. I Have Spark on coil wire at dist. sounds like a fried HEI control module or a bad ground to the distributor. Attachments:. You're fine with the Delco EST ignition on your Yamaha. I checked the coil, no spark going out of it. Folks rave about them. I have the coil power wire wired into the + terminal on the coil, as well as the red wire coming from the module. That's a fine tutorial on how to install a Mopar electronic ignition box, but a GM HEI module creates a hotter spark and doesn't use a ballast resistor. The MSD's are very specific as how to hook up to HEI, OEM and MSD applications. Positive accross and according to inyernet is good. New carburettor, new distributor, new plug wires, oil pump, water pump, rebored, new pistons, rings, bearings, new TP 100 sensor. We rigged a simple bench test to show how this idea works with a Ford distributor. You will find your problem with this. Awesome, I will be doing the HEI Ignition. In this coil, the electricity has a voltage high enough that it creates a spark in the spark plug, and this ignites the fuel and air combination. Shop 289 Ford Small Block V8 Spark Plug Wires and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Troubleshooting techniques fall into two categories, depending on the nature of the problem. An ignition module, also known as a control unit or an ignitor, creates the amount of energy needed for a spark plug to ignite and controls the ignition timing. HEI's are as easy as pie to fix. It may be having a problem with the distributor. This touchs bottom of coil and sticks through cap and hits the rotor button… Think of this carbon button as your ‘coil wire’ Inside the dizzy you ten have the magnetic pickup coil. Are you running a MSD Ignition box, or another brand. The engine will not run in balance if No. It will allow the voltage to charge up on the primary, and therefore also on the secondary, because in this type of ignition, the spark occurs as part of a transformer flyback action. Those systems were called HEI-Electronic Module Retard, HEI-Electronic Spark Con-trol, or HEI-Electronic Spark Selection. Replacement parts are readily available and the electronic setup requires little maintenance. The heat of the spark jumping from the rotor to the insert will in time burn the insert. None at Plug end. The spark is weak and from what I can tell I'm not getting the full voltage to the HEI. The solution to my problem was resolved by disconnecting the four prong plug from the ecm module, which had evidently shorted out, causing no fire to be transferred to the spark plugs and installing a distributor without this connector. 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. Let’s explain how an Multi-Spark Ignition works. MSD street fire HEI distributor with built in coil. We test a Stock Point, Stock HEI and a Aftermarket HEI on a 350 small-block to measure what ignition generates the most horsepower in our Ignition Performance Test Shoot-Out. If there is spark, replace the ignition sensor in the dist. Shop Mustang Spark Plugs. wiring and no spark on a 2001 ez go workhorse with 350 robins engine January 22, 2015, 01:24 PM ~~ive got a 2001 ezgo workhorse that I got for a really good price. 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. Open or shorts on CKT 430 from distributor module to PCM/ECM. Could be the cap / rotor, the coil, the pickup in the distributor, or power going to the coil or distributor. No luck todayWe re-check and cleaned all of the ground connections from the coil bracket, and the main wiring harness ground to the block. Checking if you are getting an ignition spark with a test light is quite simple. 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. msd box is wired back to distributor. I have 12 volts going to the distributor and verified that I have a good ground between the engine and chassis. I have verified voltage in crank and run, all my connections to the PCM have been checked end to end. Secondary, (batt wire to carbon pick up on bottom of coil was OL. Troubleshooting a faulty or inoperative ignition should always use a logical approach. If you have put fuel to it to no avail, then you probably dont have spark. Checked for spark, no spark at the Plugs. Still no change. Oil fouled spark plug Heavy black deposits with an oily appearance. HEI ignition conversion on a 4 stroke EZGO golf cart question? Will it work on my 92 ezgo twin robins by installing a hei module in place of the igniter i have heard it will and have seen it on 2 strokes just wandering if it will on a 4 stroke let me know guys thanks. I have12 v from a new battery to the ignition switch. I have no spark at all. This past March, we reviewed primary circuit funda-mentals. Power going in but nothing coming out. HEI’s are as easy as pie to fix. Distributor with the Instant Timing Knob No spark box needed, "No Resistance" rotor bushing, Racing Advance Curve. HEI and ELECTRONIC SPARK CONTROL FUNDAMENTALS AND TROUBLESHOOTING Troubleshooting the HEI coil in cap ignition. You will have no spark from the distributor. This test will directly test the ignition coil itself and thus eliminate the distributor cap as a possible source of the No spark result. Ignition Coil Diagnostics. Have 12v ignition. But with the change to unleaded gasoline many years ago, fouled plugs are much less common now since fouling was mostly caused by conductive lead deposits on the plug electrodes. The ignition is a GM HEI, with MSD's ultimate HEI kit that includes the new module and coil. i put a brand new coil and. With an HEI distributor, the critical components for a big, high-RPM spark capability are the coil and the module. NO spark at all when. There is NO WAY to change the advance curve of a computer-controlled HEI distributor- timing is controlled ENTIRELY by the ECM's programming! The only change you can make in the advance curve, other than buying an aftermarket performance chip for the ECM, is to manually advance the base timing (usually worth a little HP by itself). It gives a true spark over the full. If you have no spark, test a cou-ple other plug wires. Automobile ignition generates more voltage than a magnito ignition, since automobiles have multiples of cylinders and have more production in power and carrying loads so they have ignition timing that adjusts to the various loads and speeds but on a lawnmower it really don't matter what color the spark is so it runs, but however on a automobile. TOPIC: Help, power to coils, but no spark. So I may have an existing wiring issue outside of the HEI unit itself in the OEM ignition wiring. Finally, the DUI HEI unit provides 50,000 volts to the spark plugs compared to the stock unit which supplies somewhere around 20,000 volts. Verifed wires again. The instruction manual shows the correct wiring and the best method for wire hook-up to the ignition switch wire. Repair or replace the cap, rotor, plug wires and/or spark plugs as needed. PitStopUSA. The current control circuit protects against coil over heating. Whenever the cam pushes the lever, it opens the points. There is spark to the coil (I did the screw driver in the coil plug test by touching the white wire on the MSD 6al to a ground) but not to the plugs (I held a spark plug wire to a ground and no spark). What causes this and how do I prevent it. Remove the distributor cap and check for spark at the center terminal of the cap using the H. I've confirmed there is 12V at the positive side of the coil. What could be wrong? Car is a 1965 or 1966 model depending on who you believe. EB - no spark - how to tell if its the coil or distributor? - posted in 6 Cylinder Engines: Hi Ive got an EB Falcon with a 4. To disable electronic ignition systems, disconnect the electronic ignition module or remove the primary battery terminal from the ignition coil. Clamp tester to engine as ground. With the engine off, disconnect the 4 pin connector going to the lower rear of the distributor. For race applications only. There is no power there until the key switch, the pedal switch, and the neutral safety switch all make contact. That's a fine tutorial on how to install a Mopar electronic ignition box, but a GM HEI module creates a hotter spark and doesn't use a ballast resistor. The coil (mounted in top of dizzy cap) Under the coil is a carbon bushing with spring on it. I checked the wires going in to the coil and found power. ***Please read through ALL the information before attempting any procedure listed here and before asking ANY questions*** ***This tutorial is designed to explain step by step the proper procudures for troubleshooting a no spark issue for an engine with points ignition. You can not run only 6-8 volts into a high winding coil and expect anything close maximum rated output (most HEI coils are rated at 12-14 volts input). I put it to top dead center on #1 spark plug. Hopefully it. Gearwrench Ignition Tester Calibrated for HEI Ignitions accurately checks for spark in ignition systems without removing spark plug from engine. of the HEI is the coil is integrated right into the distributor cap, meaning no coil wire. This is a discussion on 1969 Chevy Nova HEI Ignition System - Spark It Up within the Camaro / SS forums, part of the Vehicle Specific category; 1969 Chevy Nova HEI Ignition System - Spark It Up Introduced more than three decades ago, GM's HEI ignition system. ====HEI Tips:==== It is vital that the white Silicon Grease be placed between the underside of the Electronic Ignition Module and the alloy surface it. These dis-tributors also used both vacuum and centrifugal ad. Distributor & Spark Plug Wires Ignition Combo Kit For Chevy SBC 350 BBC 454 HEI. New Ignition Module, New r. Holley carburetors powered every Monster Energy NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. 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. These later HEI distributors are not covered in this article, other than to say they're generally not used in performance applications unless used as just a trigger for an aftermarket ignition amplifier box or with a modified computer. To diagnose a loss of spark in your car engine, check your fuse box for any black spots on the fuses to make sure they're all working. Dozens of distributors available for most makes and models. However, the HEI's large diameter cap may interfere with other underhood components in vehicles not originally equipped with HEI ignition systems. still no spark. yep, now it's happened to me. If there is no mechanical or vacuum advance, then the best thing is to do is slightly advance the timing and leave it fixed. When the module dies, it dies. i put a brand new coil and. I had gotten the engine started briefly , timing was way out of whack and the engine was running poorly, no no spark again. Stock big-blocks came with cast-iron Delco-Remy distributors until 1969 (Corvettes until 1974); then the switch was made to aluminum-bodied point distributors. popularity in the ‘90s was an HEI distributor from a Chevrolet inline 250 or 292 six. It is a good idea to cover the carburetor with a shop rag or a piece of plastic to protect against the accidental dropping of any small parts into the. We rigged a simple bench test to show how this idea works with a Ford distributor. Ive got no spark at the spark plugs. Older rotors were made form lower quality plastics and can transmit spark through them, increasing resistance and heat, failure. The spark travels through the cap and to the rotor underneath. The module was tested good at a parts store. Wired correctly to every post found. Just the coil itself. HEI needs a good ground especially if youre runnning an upgrade control module for better spark. One thing about HEI in place of a CDI is the bike will now become fixed ignition timing, as the HEI does not advance/retard the timing. Both the coil, and the ignition module get their power from the D side of the solenoid. Testing a No Spark No Start Condition. did you mean to say "like there is NO spark"?. In order to achieve this the ballast resistor or the resistance wire must be removed from the circuit and replaced with a pure 12 gauge feed wire. One thing about HEI in place of a CDI is the bike will now become fixed ignition timing, as the HEI does not advance/retard the timing. Sorry to disagree but a bad module would produce no spark not “no spark at the plugs”. Calibrated for high energy. I have a 1986 GMC 2500 Sierra with a 5. If you are sure the points are set right replacing the cap would be my first step at throwing money at parts, replacing the coil second. If an engine is experiencing repeated coil failures, the underlying cause may be resistance from worn spark plugs or excessive spark plug gap. To keep frolm fouling up the plugs, I have the fuel line pinched and am using starting fluid for the most part, just til I get it to fire up. I replaced the plugs also this has me baffled. The Dwell control circuit ensures, long consistent coil charging. GM's high energy ignition (HEI) distributor has been used as an affordable, easy to install performance distributor since its introduction in the mid 70s. Spark Plug Wire Products. 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. Both the coil, and the ignition module get their power from the D side of the solenoid. I have an 84 Sierra with a small block 400 in it with HEI. This causes the coil to suddenly lose its ground, generating a high-voltage pulse. Ignition Coil Test. now, knowing that, i ground the plugs to the motor; look for spark and only hits after release the start button, and when it sparks it’s only once (not all cylinders at once of course). If it pops the checker its not ignition plain and simple if it does not I would install a coil for a quick check I use a GM coil like in the pix with a resistor Its a common coil and can get the number if need B ( I have a stash of used ones) Spark checker get one Go no go gauge no guessing :wink: Don't be a fool are get fooled get one. Speedmaster has become a leader in its field, built on a long term consistency of being a specialist in aftermarket automotive components. The 1974-1/2 units used the same advance weights, springs and stops as the points-type distributor. Some later HEI distributors used five terminal modules, the fifth terminal was used to retard tim-ing based on sensors and circuitry external to the distributor. • When troubleshooting any electronic ignition system for no spark, follow these steps to help pinpoint the exact cause of the problem: • Step 1 • Turn the ignition on (engine off) and, using either a voltmeter or a test light, test for battery voltage available at the positive terminal of the ignition coil. For ignition spark system 1- check if you have spark at the coil then 2- check all wires spark with HEI spark tester 3- If only one wire has no spark then 3a- Distributor cap cracks inside or rotor defect replace Distributor cap and rotor 4- replace wire defect or no spark test with HEI tester. I checked the plugs they look good but no spark. Holley carburetors powered every Monster Energy NASCAR® Cup team and nearly every NHRA® Pro-Stock champion for four decades. This magnetic pickup cable then runs into your timing control box. There is no power there until the key switch, the pedal switch, and the neutral safety switch all make contact. I wired the distributor into the ignition coil driver the way it said to but I'm still not getting spark. Logic Level Drivers for MicroSquirt. If you are sure the points are set right replacing the cap would be my first step at throwing money at parts, replacing the coil second. ***Please read through ALL the information before attempting any procedure listed here and before asking ANY questions*** ***This tutorial is designed to explain step by step the proper procudures for troubleshooting a no spark issue for an engine with points ignition. Voltmeter reads 12 volts coming off the coil to distributor with key turned on (with the kill switch turned off, it reads no voltage so assuming it's not a kill switch issue). The coil can be checked with a multimeter but i'm not sure about testing the module but a google search should turn something up. HEI Electronic spark module troubleshooting tutorial NO SPARK, NO START, NO PROBLEM. The top reason ignition coils fail is bad spark plugs or plug wires. Let's start with the coil. 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. Ignition Coil Troubleshooting: (No) Fire in the Hole. Stock GM HEI Distributor & Coil in a vintage 1969 Camaro Z-28. My battery shorted out. I seem to be getting no spark to one cylinder. It's the type with the coil on top of the cap. Hope it helps. Crank engine and check for spark. Tried parts from 2 others but no luck. Problems with the distributor could include misfires, a lack of ignition, or incorrect timing. I know this isnt a good practice on high voltage distributors. 0 in it and a HEI ignition and Vacuum advance. Small Block V8 (221, 260, 289, 5. EB - no spark - how to tell if its the coil or distributor? - posted in 6 Cylinder Engines: Hi Ive got an EB Falcon with a 4. No spark, no start condition. We offer a one-year warranty on this A-Team Performance HEI Distributor. This is a tricky one but I’ll bet the distributor is out of phase. This test will directly test the ignition coil itself and thus eliminate the distributor cap as a possible source of the No spark result. Oil fouled spark plug Heavy black deposits with an oily appearance. I have 12 volts going to the distributor and verified that I have a good ground between the engine and chassis. Together with the spark timing signal [pin E], Ref (tach) [pin R], and crank override [pin B], there are 7 pins in total ). #B4007-001, Short Mount Distributor Cap Clip used on Delco Remy Distributors. That's a fine tutorial on how to install a Mopar electronic ignition box, but a GM HEI module creates a hotter spark and doesn't use a ballast resistor. The HEI distributor is still an inductive-discharge ignition, but exchanges points for an. Intermittent ignition coil failures are tough to diagnose because the windings are heat sensitive. Honeywell UOP Callidus ® pilot ignition systems keep your flares continuously operating to ensure that waste gas routed to the flare is quickly and reliably ignited in a safe manner. Use an inline spark tester to verify spark ($3 Harbor Freight). I have spark at the coil but not inside the distributor. Module Power The combination of the right module and coil are the key elements to a high-performance HEI distributor. No timing light function indicates no spark. The HEI is a great distributor for a street or street/strip car. Turn the distributor slightly if needed so the spark occurs at TDC. I replaced the coil and still no spark. I have dealt with numerous MSD installationsthe two main problems with faint or no spark, points to the magnetic pickup in the distributor. 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. *= No Sales Tax OUTSIDE the state of Michigan. Still have no spark?. The ignition is a HEI ignition and has the coil mounted in the distributor and also a vacuum advance distributor. Open or shorts on CKT 430 from distributor module to PCM/ECM. I know this isnt a good practice on high voltage distributors. Remove engine cover. The vacuum advance is used to improve economy. In the mid-1980's, Electronic Ignition (EI) systems were introduced with no distributors and computer-controlled spark advance. If there is no mechanical or vacuum advance, then the best thing is to do is slightly advance the timing and leave it fixed. Connect the timing light's power cables to the battery. Aftermarket HEI distributors. Yeah, so my question isif I bought a new module, can I buy a 4 pin and everything work out ok. Testing a No Spark No Start Condition. The HEI or electronic ignition module is a somewhat common. Of course you can use a distributor from 74-79 cars and trucks if you can find a good used one. Help!! Were getting no spark at the plugs in our 1978 Corvette with HEI Ignition. I have updated my XJS with a Wolf computer and full electronic fuel & ignition control, removing the distributor altogether with the two Jaguar late model V12 coils directly connected to the spark plugs, controlled by pick up sensor on front pulley. No Scan Tool required. You don’t even need kilobuck ‘scopes, module testers, or computer interfaces. Wouldn't start tuesday morning, plenty of fuel, no spark. i put the ground strap on, tried to start it, and no luck. Car runs ok when weather is warm, wont start after being driven in rain. For items received as described, a refund of the final invoice price (minus shipping and handling charges and a 15% restocking fee) will be issued. Please Note: This set is designed to be used with HEI Distributors. We ran 10 min, then shut down, it started right back up no problem. This page describes the installation of a GM HEI (High Energy Ignition) electronic distributor in my '74 Nova with a 350 small block. The points also control the timing of the spark. Check for fuel system problems, or fouled spark plugs. "igniters") and some coils with built in igniters require a 'logic level' signal. did you have the spark plug grounded? I am reading about 12. Spark Plug Wire Products. Logic Level Drivers for MicroSquirt. The large distributor cap designed for the DS-I to help prevent terminal spark jumping was also standardized for all DuraSpark versions to reduce long-term maintenance. The ignition spark comes from the ignition coil into the center tower of the distributor cap. That's a fine tutorial on how to install a Mopar electronic ignition box, but a GM HEI module creates a hotter spark and doesn't use a ballast resistor. It gives a true spark over the full. #809956 - 07/14/10 02:50 AM no power to HEI Distributor I bought brand new module and a condenser that it hooks up to. OLD DISTRIBUTOR REMOVAL. If you have no spark, test a couple other plug wires. Wire (black) • Part No. One thing about HEI in place of a CDI is the bike will now become fixed ignition timing, as the HEI does not advance/retard the timing. LiveWires For GM DUI. 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. Editors note: Although these instructions are for replacing the 57 GMC distributor with HEI ignition, they apply to any of the early year Pontiac or GMC V8 engines. Attachments:. The HEI distributor is still an inductive-discharge ignition, but exchanges points for an. The heat of the spark jumping from the rotor to the insert will in time burn the insert. If you are sure the points are set right replacing the cap would be my first step at throwing money at parts, replacing the coil second. We have the widest variety and the best prices when it comes to Corvette ignition wire, and we have everything you need when it comes to buying a Corvette ignition shield or Corvette ignition switch. PHOTO 1 The original HEI design featured an integral ignition coil and a one-wire hook-up of 12 volts. I have no complaints with their service. The stock pointstype system used 7-mm wires while the HEI system used those measuring 8 mm. It stopped running when it wanted to shift, but that had nothing to do with it when I pulled a spark plug wire and no spark. Check for fuel system problems, or fouled spark plugs. I have a 1986 GMC 2500 Sierra with a 5. No box or coil. In order to achieve this the ballast resistor or the resistance wire must be removed from the circuit and replaced with a pure 12 gauge feed wire. Diagnosis of HEI Ignition Systems; Got the HEI No-Spark Blues? Don’t worry, be happy. This time I discovered that I have no power going to the spark plugs (using an inline spark tester). If you hold it close, you should see a jump. I have a an Hei distributor and i am getting no spark I have gotten new spark plugs, new plug wires, new ignition module, and had the coil tested and it was good also used 3 different wires to power it running straight to a hot wire idk what to do now no spark at all only thing holding me back from starting the new motor. I did basic No start troubleshooting. The problem might be no ignition, fuel or compression. HEI Distributor Conversion. Muscle Car Voltage Regulator. Hopefully it. Possible causes of "no distributor reference" are: The grounding screw is located on the metal tab that is attached to the plastic fitting on the five wire harness. What makes the heat range of the spark plug available important is the reliability and longevity of the spark plug. Measuring a coil’s. So I may have an existing wiring issue outside of the HEI unit itself in the OEM ignition wiring. Basically out of nowhere after running perfectly fine the car would not start and I found that there was no spark being produced (none seen when removing plug wire and holding it away from plug to watch for it). If there is no spark: Inspect all of the wiring. These are the 4 wires coming out back of distributor. No periodic lubrication is necessary; engine oil lubricates the lower bushing, and an oil-filled reservoir. It just stopped in traffic and would not restart. No external coils, modules or spark boxes are needed! Just one 12 volt hot wire connected to the DUI will send 50,000 volts of pure spark energy to the plugs and light the cylinders like never before. Its a small tab that grounds the coil. This distributor works on 12V Electricals, and there are no options for induction used. Yup fixed it for about $20! Generally I try not to replace coils on older applications because sometimes the hotter spark will cause older distributor caps to arc and they can be a bear to find. Once spark energy reaches the spark plug, You MUST provide a 'Ground Path' back to battery negative so the electrical current can complete the. Its located on top of the distributor between the plug wire towers under a plastic cover. Engine swings but won't fire. 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. I'm getting a weak spark to my plugs in my pick-up. The Hot-Spark electronic ignition conversion kit replaces breaker points and condenser in the distributor to provide rock-solid reliability. Make sure you select a set that is going to last and can handle the power your Mustang is putting out. Then connect the tester between the spark plug boot and the engine. Have a 70's 327 in my 67 malibu. I checked the plug gaps, i even tried closing the gap a little bit. It will have 3 wires running into it from the harness, 2 from the distributor and 1 spark plug wire. I wired the distributor into the ignition coil driver the way it said to but I'm still not getting spark. Sounds like an ignition module problem. Add volts, it will come back alive again. 95 GMC Topkick no spark. Can you see if there is spark from the coil wire?. I have a '49 3100 with a 350 and an HEI distributor. But with the change to unleaded gasoline many years ago, fouled plugs are much less common now since fouling was mostly caused by conductive lead deposits on the plug electrodes. Use an inline spark tester to verify spark ($3 Harbor Freight). Tested from the ignition coil to the distributor is good, from the cap itself no power. The ignition is a GM HEI, with MSD's ultimate HEI kit that includes the new module and coil. It's a good way to learn about setting timing. HEI Distributors either work, a spark or no spark. STRIP ANNIHILATOR ignition system may result in damage to the ignition system. The HEI distributor has eliminated the need to do roadside tune ups to a point-style distributor. This article will walk you step by step thru' the testing and diagnostic of a MISFIRE or NO START Condition. An item on the HEI distributor that will leave you with no spark is the pickup coil. There is spark to the coil (I did the screw driver in the coil plug test by touching the white wire on the MSD 6al to a ground) but not to the plugs (I held a spark plug wire to a ground and no spark). i got my meter out and read across the pickup coil, it tested good. HEI Performance Replacement Distributors by Taylor Cable Products. I've always been told HEI needs a solid 12volts to work correct so I typically use 10 gauge wire for power and a relay off of the ignition switch to make sure there are no issues. They may have a vacuum advance or a centrifugal advance. Attach spark plug wire to tester end. 1 spark plug wire is inserted into No. 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. At first the #2 plug started sparking but not the 1st but now neither spark. It not hard to change it over to a regular HEI distributor without the ESC system. Car died while driving. I put it to top dead center on #1 spark plug. Have replaced spark plugs, had starter and battery tested. Holley® has been the undisputed leader in fuel systems for over 100 years. Some later HEI distributors used five terminal modules, the fifth terminal was used to retard tim-ing based on sensors and circuitry external to the distributor. The first thing to remember that the system needs to have power. 0L 242 1998-1999 RED TJ XJ WJ - POWERBOOST PLUS.