94 4.0 has a weird miss fire
#1
94 4.0 has a weird miss fire
So when i warm up my truck in the morning i have no problem. But if i leave my truck in a parken lot for about 30mins ill start it back up and it has a bad misfire and the truck wants to die, but when i revd up the motor for a second it went away, Whats goin on it dos it a random and iv checked my plugs and intake and it just fine. any ideas
#2
An injector partially stuck open would dump the remaining fuel in the fuel rail until the pressure went down.
With a cold engine, the fuel would have had time to evaporate and not cause a problem.
A warm engine, just shut down for a short time would have gas sitting in the intake causing too rich of a fuel/air mixture.
With a cold engine, the fuel would have had time to evaporate and not cause a problem.
A warm engine, just shut down for a short time would have gas sitting in the intake causing too rich of a fuel/air mixture.
#3
An injector partially stuck open would dump the remaining fuel in the fuel rail until the pressure went down.
With a cold engine, the fuel would have had time to evaporate and not cause a problem.
A warm engine, just shut down for a short time would have gas sitting in the intake causing too rich of a fuel/air mixture.
With a cold engine, the fuel would have had time to evaporate and not cause a problem.
A warm engine, just shut down for a short time would have gas sitting in the intake causing too rich of a fuel/air mixture.
Try some Injector cleaner, i recommend Lucas Oil. i do it about every 6 months, keeps them clean and lubricates the lifters.
#4
#6
I get slightly better mileage running this stuff, but my truck idles better with it. I suggest getting a gal jug if you can find it, it has the best price.
http://www.lucasoil.com/products/dis...el%20Treatment
http://www.lucasoil.com/products/dis...el%20Treatment
#7
#8
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sam0330
2.9L & 3.0L V6 Tech
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12-21-2009 03:31 PM