|
Re: 1994 1500 5.7 Liter Engine Skipping/misfiring
Quote:
Originally Posted by dozer641
The truck has 331,000 miles on it, so no spring chicken by no stretch... That being said, this is what i have done so far, I checked the compression, all cylinders are at 105-111 psi, but 7-8 are at 93,98 psi,
|
What is your altitude? 111 would be terrible around here. 93 is not the worst I've seen, but it's very low. With 300,000+ on the clock I'd be concerned about timing chain wear retarding the camshaft. That will also drop cranking compression.
Quote:
Originally Posted by dozer641
replaced the fuel pump, it was on the weak side (6 psi)new plugs,cap,rotor,MAP senser,EGR valve,When I get home from work tomorrow, I will put my scanner on it and see if it tells me anything, but currently not throwing any codes?
|
How old is the O2 sensor? Any chance they damaged it when the new exhaust was installed?
__________________
.
.
For the good of the Free World, DEMAND COMPENSATION FROM CHINA for their release of the Virus Originating in the Wuhan Laboratory, released (intentionally or negligently) into the world in 2019 (VOWL-19). Ten trillion to start with, increasing as needed from there, PLUS compensation for the sickened, and "wrongful death" settlements for the families of those who didn't survive. END trade with Communist China.
|