i need help!
Thread Starter
Joined: Apr 2008
Posts: 3
From:
i need help!
i gota 98 f150 and the check engine light started flashin a few days ago.. and the truck sortashakes when i hit the gas.so i took it to auto zone and advanced auto parts and had people look at it they say i gotta cylinder 8 missfire. so i changed all the spark plugs n wires now it is still messin up. somebody said it could be a burnt valve and that would suck. so before i take it to a garage and pay out the butt any body got any suggestions.
Super Moderator
Joined: Jul 2006
Posts: 7,555
RE: i need help!
What engine?
Did you happen to look at the plugs for an indication as they were being removed? The CEL flashing indicates a misfire severe enough to cause catalyst damage.. Could be lost comp, coil pack, bad injector ect.. Might want to buy an inexpensive comp tester and check before taking it in.. Whats the mileage? Does it smooth as the RPM's are brought up, or just a hard misfire through all ranges? What was the running condition 'prior' to the misfire? any CEL before the misfire?
Did you happen to look at the plugs for an indication as they were being removed? The CEL flashing indicates a misfire severe enough to cause catalyst damage.. Could be lost comp, coil pack, bad injector ect.. Might want to buy an inexpensive comp tester and check before taking it in.. Whats the mileage? Does it smooth as the RPM's are brought up, or just a hard misfire through all ranges? What was the running condition 'prior' to the misfire? any CEL before the misfire?
Thread Starter
Joined: Apr 2008
Posts: 3
From:
RE: i need help!
um i dont really know anything about trucks but my uncle changed all the stuff and he proly checked that stuff. but before all that happened the truck drove pretty smooth the only time it would missfire would be when it rained but after it heated up it would be just fine. when i give it alot of gas to speed up it doesnt missfire bad at all but when im jus cruisin it is bad. i dont even know what CEL is lol.
Senior Member
Joined: Aug 2005
Posts: 1,067
From: De Pere, WI
RE: i need help!
ORIGINAL: Hayapower
What engine?
Did you happen to look at the plugs for an indication as they were being removed? The CEL flashing indicates a misfire severe enough to cause catalyst damage.. Could be lost comp, coil pack, bad injector ect.. Might want to buy an inexpensive comp tester and check before taking it in.. Whats the mileage? Does it smooth as the RPM's are brought up, or just a hard misfire through all ranges? What was the running condition 'prior' to the misfire? any CEL before the misfire?
What engine?
Did you happen to look at the plugs for an indication as they were being removed? The CEL flashing indicates a misfire severe enough to cause catalyst damage.. Could be lost comp, coil pack, bad injector ect.. Might want to buy an inexpensive comp tester and check before taking it in.. Whats the mileage? Does it smooth as the RPM's are brought up, or just a hard misfire through all ranges? What was the running condition 'prior' to the misfire? any CEL before the misfire?
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