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Old 09-19-2007, 02:05 PM
timbo666 timbo666 is offline
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COP testing

im supposing my dead cyl 4 is due to a bad coil on that cyl, but i need some test procedures, ohms specs, voltage drops, things of that nature, also some fuel injector specs would be nice as i havent totally ruled out a bad injector yet

im not one for just throwing parts at a car, therefore any help would be greatly appreciated.
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Old 09-19-2007, 02:23 PM
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JaySVX JaySVX is offline
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Start the car. It'll run rough. Go around and unplug each injector. If it gets worse, that coil pack is good. If it stays the same, that cylander is not firing, so it's either that injector or that coil pack or that spark plug.
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Old 09-20-2007, 01:36 PM
timbo666 timbo666 is offline
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i've done all that, but i need a more indepth testing procedure, im just about to go out and swap out coils and injectors, but any more advice would be amazing!
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Old 09-20-2007, 02:30 PM
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Quote:
Originally Posted by timbo666 View Post
i've done all that, but i need a more indepth testing procedure, im just about to go out and swap out coils and injectors, but any more advice would be amazing!
All the coils are the same, only the lead length changes to each plug.

If you swap the coil for its opposite number on the other bank, and the one not firing moves to the other side, then you know it is a duff coil

Joe
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