Thread: Ignition coil testing
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Old 08-10-2020, 08:57 AM   #4 (permalink)
Wilson2608
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Quote:
Originally Posted by Jhill View Post
Are you chasing a single cylinder or a random misfire? To be honest I don’t put much faith in ohm testing coils, I’ve had them pass ohms test and fail in real world on other makes. The best test for a coil in my opinion is to use a HEI coil test plug. They put a fairly large load on the coil and give a nice visual and audible indication that you either are or are not getting spark, if it can fire the HEI test plug it will fire in cylinder.
Chasing a random misfire. I’m starting to think it has something to do with my PCV system(oil residue and dirt/grime all over valve cover) . Car has 120k miles on it and I’ve had this misfiring issue for 6-7 months if not more now. The misfire is noticeable at WOT and idle. Under light loads the car drives perfectly fine .
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