GM-GMC: Distributor, ohm meter, pickup coil


Question
I have a 72 Chevy Cheyenne that doesn't start..it is getting fuel. I had Oreilly check the pickup module and it was bad they replaced it but it still won't start. Do you know what the ohm readings should be on the coil...or another way to test the Coil with one person doing all the work. It has HEI thanks

Answer
Your problem is most likely NOT the coil but the PICKUP COIL within the distributor.

Disconnect the 2 wire connector that connects to the ignition module and using an OHM meter probe the disconnected 2 wire electrical connector that goes to the PICKUP COIL and you should have an OHM reading of 500 to 1500 ohms.

Also check each lead of the pickup coil to be sure that neither wire is shorted to ground.


Let me know what you get and IF the pickup coil test out OK and you are POSITIVE that you tested it CORRECTLY, DON'T GUESS or ASSUME, This test is CRITICAL and if done IMPROPERLY can lead us down the WRONG PATH for testing the coil.


Let me know.


Thomas