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testing the COP code 304

Old May 21, 2007 | 01:20 PM
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montero91
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testing the COP code 304

after an engine wash(2 days later) the engine is missing and i got a code of 304. pulled apart COP and blew out with air and still is missing, code 304. did not see moisture anywhere can i test it or is it shot?
 
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Old May 22, 2007 | 01:17 PM
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l-m tech
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From: duncan oklahoma
blow the plug bore out because there is probably still some water in there causing a short.pull the spark plug out and look at teh side of the plugs body .see if there is a sign of spark running down the side.usually a new plug and cop will fix the situation.just make sure there is no water in the bore
 
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Old May 27, 2007 | 01:49 PM
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Swap the #4 coil with the #1 coil. If your misfire moves to cylinder #1 (P0301) then you know the coil is bad.. AND it's now much easier to get to

Good luck.
 
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Old May 27, 2007 | 03:51 PM
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good idea because i took it out and cleaned it and then put it back then had it out again to replace it.
 
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