Accel, mallory, msd ignition, pertronix, proform and more. The ignition module is responsible for creating the spark that starts your engine, so when your car wont start, testing this part is a good place to begin. The hei is ok, but perhaps your distributor cap or some of your plug wires are defective. A highquality tester can streamline your testing needs and provide you with the information you need to keep your vehicle. Hei performance replacement distributors by taylor cable products. Ignition technical support holley performance products. This kit is great for upgrading a stock hei for improved performance. Speedway sbcbbc chevy v8 hei distributor w oe module. Ignition modules hei distributor type free shipping on.
If that isnt possible, another way is to replace the module with a known good module. Since diagnosing the module, pickup, and the coil of an hei distributor is a little trickier than an oldschool points distributor. Fits all v8, 6 cylinder and 4 cylinder dui hei distributors. When installing an msd ignition box the module in the distributor will be removed and the ignition box is triggered directly off the magnetic pickup in the distributor. The tools you need to diagnose an hei that has a 4terminal module. With eyes blocked, the volts should drop way down below 2 volts or less. With the hei coil in cap there is a lot of heat in the distributor which could affect the longevity of the capacitor, but the module is more sensitive to heat and youre not. Ohmmeter 1 shows the primary coil resistance connection. The most popular msd distributor is our standard probillet model. For even more performance upgrade to the heat digital hei module, with built in rev limiter pn 83647. How to test an ignition coilmodule with a test light distributor ignition gm duration.
I have been using mine for some time now and its still working like new. Heat digital hei module, with rev limiter, each part. A hei large cap with integral coil b hei small capremote coil v6 and v8 engines c hei small capremote coil 4 cylinder engines. 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. In addition to the module shown above, you can use the hei 8pin module from the small cap hei distributor. Pickup coils for the hei distributors are not available as replacement parts. Next, place a credit card down into the distributor, blocking the 2 photo optic eyes on top the module facing each other on the top. Automotive vehicles require a battery to run the ignition and keep it operating for years.
Find great deals on ebay for gm hei distributor and sbc hei distributor. If pinging is detected than turn the vacuum advance setting counter clockwise until the. Check continuity between capacitor shell and distributor body and distributor body and engine block. It will automatically advance the timing on acceleration a specific amount and retard the spark when decelerating and starting. So i figure i would just get a whole new distributor. If you suspect a problem in your ignition system, there are certain preliminary checks which you should carry out before you begin to check the electronic portions of the system. Many parts stores can test the hei ignition module at no charge. Troubleshooting the hei system repair guide autozone. You will want to determine whether the ignition module is producing electricity and that the electricity is getting to the spark plugs to get your engine going. The gm hei distributor uses a hall effect for the triggering and sensing the no. The main problem i have encountered with stock ign coils is that under high heat and severe use. Turn the distributor housing until the vacuum advance canister points in the. You should have battery voltage w the key in the start and run positions. Number 1 plug wire should be at the front of the distributor just to the drivers side of centerline.
For all but a slant, you can buy a readytorun hei distributor h. Acdelco d1906 professional ignition control module very nice part and quality made you will not be unhappy with this purchase, works great as the manufacturer intended. I took the distributor to a shop with a distributor curve machine, it. A good battery tester is designed to gauge the charge of the battery and the strength of the ignition. How do you convert hei to mopar for a bodies only mopar. The info from this thread bypass toyota ignition and coil i used the parts listed in the thread ignition module from. Some engine use a hall effect switch, which used used in place of the reference terminal on the hei module. The symptoms of a defective component within the hei system are exactly the same as those you would encounter in a conventional system. Remove the distributor cap and wires as an assembly and position them out of the way. This was used on 1987 through 1992 camarofirebird tuned port injection v8 engines, as well as 1987 to 1993 full size cars and 1987 to 1995 pickup trucks, and v6 mpfi cars such as the fiero. Duihei streetstrip coil kits performance distributors. The advance auto parts core charge presented to you online today with your item is representative of the most common core charge. Troubleshooting the gm hei distributor it still runs. Carefully detach the wires from the module terminals.
I have a gm hei module hidden under the distributor. 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. Since the only change between electronic and conventional ignition systems is in the distributor component area, it is imperative to check the secondary ignition circuit first. Find great deals on ebay for hei distributor chevy and hei distributor chevy 350. I was low on cash and could not figure out what was wrong with my hei distributer in my 1968 camaro. When i looked at this thing on i thought, no way can this be that good. Looking for help on this, i have a 1978 fj40, did not have coil or ignition module when i got it so i am trying to do the 4 pin gm ignition module and standard 12 v coil set up. Troubleshooting an hei distributor doesnt have to be hard. Hei and electronic spark control fundamentals and troubleshooting troubleshooting the hei coil in cap ignition. It uses an ignition module within the distributor to regulate the timing curve as well. The module is essentially an amplifier with a built in analog to digital convertor. Since diagnosing the module, pickup, and the coil of an hei distributor is a little.
As shown in the diagram at the bottom of page 16 of the instruction set. How to test an ignition coil module with a test light distributor ignition gm duration. It is true they last longer with everything new, but once a module goes out and i replace it, the replacement does not last very long. Hei troubleshooting page 2 coil in cap chevythunder. It did away with the conventional points and condenser and used a magnetic pickup. Connect an ohmmeter between the carbon button in the cap and the bat terminal on the distributor cap to test for short in the ignition coil. Even turning the shaft by hand will show a firing sequence. Test hei coil i am not getting any spark on my 78 corvette, and i bought an msd 8225 coil. Hei distributor troubleshooting with performance distributors.
Msd offers several different styles of probillet distributors, so our first step is to identify your model. Troubleshooting a faulty or inoperative ignition should always use a logical approach. The kit includes the coil, cap, rotor and nylon retaining screws. I replaced the ignition module, pick up coil, cap and rotor as well. Test the vacuum advance setting by load testing the engine.
Trailbeast sells the kitted parts if you dont like junkyards. Also fits performance distributors chevrolet, pontiac and dodge tripower ignition systems. This hei distributor for sb and bb chevy noncomputer controlled engines features. The msd hei distributors pn 8365 and 8362 are both considered 4pin hei distributors. Please practice handwashing and social distancing, and check out our resources for adapting to these times. The streetstrip coil kit has a one year warranty from date of purchase. This is easily identified by a 2pin connector, with one violetblack wire and one orangeblack wire that connect to the magnetic pickup inside the distributor. Check this link out mopar hei conversion im sure the purest will jump on me because its not a mopar part but believe me after you make the switch youll never go back to the old chrysler box i left the old module on the firewall for looks and no one knows the difference. The high energy ignition hei used on most general motors products prior to the use of fuel injection was a hall effect type of distributor. The 8pin hei module is a bit better than the 4pin, using sealed connectors, and found on 8595 chevy v8 93 cars. This system consists of a starshaped wheel on the center shaft, which passes in front of a magnetic pickup. Hei on left, pointsstyle or chrysler electronic on right. Distributor replacement parts free shipping on orders.
Hei is also easier to retrofit to pointstype engines. Put some spark in that ignition with one of many distributors from high performance ignition builders like. You will want to determine whether the ignition module is producing electricity and that the electricity is getting to the spark plugs to get your. If you have any questions, please call 1877advance 2382623 or visit any advance auto parts store. Overlooking the basics will leave to frustration and unnecessary time and expense. Second, make sure all wiring connections are clean and tight, not only at the battery, but also at the distributor cap, ignition coil, and at the electronic control module. Gm 4 pin dynamodule dui hei performance distributors. How do i test the coil on the top of the distributor. Remove the air cleaner to provide room to work around the distributor.
1521 1036 1416 1357 1381 1190 462 752 1018 246 1256 714 1442 216 1523 289 110 10 1269 1087 357 600 1231 1311 215 175 279 177 608 1486