Re: 99 Expedition 4.6 Misfire

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Re: 99 Expedition 4.6 Misfire

F.H.	30 Nov 2006 19:25
> I have a 304 Code... w/ intermittent misfire. I have replaced plug & > wire. Pulled injector and blew it out and replaced and ran a drop test [quoted text clipped - 4 lines] > > Thewdawg My 4.6 is notorious for very small water leaks that manage to leak into the spark plug chamber. I would check all the plug wires for moisture.

Thewdawg	30 Nov 2006 15:51
I have a 304 Code... w/ intermittent misfire. I have replaced plug & wire. Pulled injector and blew it out and replaced and ran a drop test on 1-4, which checked O.K. Afterwards, drove for about 30 mi w/ no misfire and running smooth. Next morning cranked up w/ miss again. Wondering if it could be trash in fuel rail or what is the likelihood of coil pack going bad? Ideas? Thewdawg

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