triton 5.4 miss fire problem im stuck. help!
05-02-2009, 09:16 PM
#11
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misfire
I'm not trying to be a smart a##. Remember to KISS. Keep it simple. If the spark plug is wet, spark problem. When coil pak is replaced, the boot should be also, and a fowled plug is a bad plug. I have found both fuel injector plug and coil pak plug to be a problem too. Some times, If you can interchange coil paks and the problem moves( via scan tool) then you might have found the problem. Injector could be not spryin' right. Or just a dead injector. If you have a vom meter ohm the injector and compare to a good injector. In a backyard kinda way that would show if its good or not.
05-05-2009, 09:46 AM
#12
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what about the EGR
Last edited by 2002F150; 05-05-2009 at 09:57 AM.