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need help, rough engine

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Ford >> Ford Trucks, Ford Vans & Ford SUV's >> Ford F-150 >> need help, rough engine

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need help, rough engine - 8/30/2008 7:43:56 PM

barnall

Posts: 11
Score: 0
Joined: 3/23/2006
Status: offline

2001 5.4
truck ran fine on thursday, parked it in the drive with the front pointed down the hill. Had torential rains that night. Friday morning the engine ran real rough, thought maybe something got wet. Continued to run rough all day and then threw code PO306, miss fire #6. I replaced the coil and plug with no improvement. Looked for vacuum leak and couldnt find any even with the use of starter fluid. engine shutters at low rpm especially under a load, clears up somewhat as rpm increases but it still surges if held at a steady rpm. I''m at a loss as what to look for. Is it possible that water got into the tank and thats what is causing the problem.
Desperately need to get this fixed and cant afford taking it to a shop. Any ideas?

Post #: 1

RE: need help, rough engine - 9/2/2008 6:27:14 AM

Bullitt94

Posts: 486
Score: 0
Joined: 8/18/2005
Status: offline

Start simple; put some Iso Heat or Sea Foam in the tank to see if it will clear up any possible water in the tank.

_____________________________

1994 Ford Mustang GT
1990 Ford F-150
2001 Lincoln LS V8
1970 Ford Bronco
2006 Harley-Davidson Sportster Custom
1990 Ford Bronco II

If you don''t already own a Ford (or Ford owned product), get one.

(in reply to barnall)

Post #: 2