Gm Hei Ignition Module Failure Symptoms. If you're talking about a GM HEI module, and the engine runs, start by checking to see if the dwell varies with RPM. Doesn't matter really, what the dwell is, just that you have more dwell as the rpm goes up. Most intermittant problems with HEI tend to be with the pickup. Troubleshooting an HEI distributor doesn't have to be hard. Find out how to test for issues in an HEI distributor with the help of Performance Distributors. C3 General - GM HEI Ignition Control Module went bad - One of the hardest things on an Old GM engine with HEI ignition to Diagnose the Ignition Control Module when..
The HEI ignition modules are sensitive to voltage, anything less then 12v and you will have problems. Most replacement modules come out of china now, if you can get and. I have actually seen more of the magnetic pickups fail than modules, The wires break from the constant movement of the vacuum advance and eventually break. This has. I don't know how deep you want to test the HEI module, but I would do this at home to test the pickup coil and module for functionality, without fancy equipment: Supply. Symptoms: Gradual power drop off, at 2800 RPM plus it turns to "spark blow out". Limp home, replace HEI coil (tried Echlin, AC Delco, etc.) Replacement process: Check cap,. Engine Fails to Start. If the positive hot wire from the battery that feeds the distributor has no voltage to it, the HEI distributor will not function. The starter will crank the engine but there will.
Gm Hei Ignition Module 5 Pin
I don't know how deep you want to test the HEI module, but I would do this at home to test the pickup coil and module for functionality, without fancy equipment: Supply. Symptoms: Gradual power drop off, at 2800 RPM plus it turns to "spark blow out". Limp home, replace HEI coil (tried Echlin, AC Delco, etc.) Replacement process: Check cap,. Engine Fails to Start. If the positive hot wire from the battery that feeds the distributor has no voltage to it, the HEI distributor will not function. The starter will crank the engine but there will.
Gm Hei Ignition Module 5 Pin
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Gm Hei Ignition Module Failure Symptoms. Engine Fails to Start. If the positive hot wire from the battery that feeds the distributor has no voltage to it, the HEI distributor will not function. The starter will crank the engine but there will.