02 4.2L E250 missfire problem
07-05-2009, 07:24 PM
This van has two re-occuring codes (Po301/po316)with a check engine light I've erased with my code reader several times. The no.#1 plug & wire have been replaced, and a fuel fliter.It lacks the normal power it use to have in acceleration.There is also a exhaust leak, just before the catylatic converter.A fuel cleaner additive was used that did help earlier.
07-09-2009, 05:12 AM
When you changed the plug and wire, was the plug wet? Your injector could be clogged enough to cause a miss. I don't know how easy it is to get to the injectors on your engine, but you could switch that injector with another and see if the code follows it.
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