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attach 2 images before spark plug & wire replacement and after still the 62, this can't be good.
04 chevy express w/ 320K miles 5.3 LM7 engine fuel pressure is normal on all injectors.considering on purchasing this van if it's something like a coil causeing this skip. or is 62 a burnt out cylinder?
thanks for advice
Last edited by the Brain; December 6th, 2021 at 7:00 PM.
make sure you clear the codes after you do some work.
You should read off all your other basic engine parameters.
Vacuum leaks are common. Check for them.
the seller got these results from a mechanic, I assume the screen is a tech2 tester. I don't have a tester. I'm willing to make a smallish investment in a tester.
1.so is 62 alot of misfires where it could be good chance of internal engine damage?
2.or is 62 not considered alot where it most likely is something else like, coil/fuel injector ect. or vacuum leak like you say.
3.cylinder 4 had 52 misfires cylinder 1 had 32 where a spark plug & wire fixed, so it seams 62 misfires isn'nt internal?
4.wouldn't a vacuum leak effect all cylinders?
I wonder if the mechanic swapped coils or injectors from a fine cylinder.
the fuel pressure is fine on injectors.
notice one of the four spark plugs it appears to not be getting fuel, is it usele for a mechanic to hand write down the fuel pressure of each injector.
this multipe missfires is what happened to my last express (it had 195K miles) I didn't even know it was misfireing it drove smooth and ideled fine I drove it for like 10K mile (then I had to try to fix it's skip after removing the intake I was hopeing it's gaskets where creating a vacum leak I couldn't get her to crank after that, I believe I had the distriber out of phase even though I marked it prior to removing.
the seller claims it idels rough but drives smooth.thanks for advice
I'm still having a very hard time finding a replacment express conversion and the last 2 years of coof has made the situation even harder.so I'm resorting to scrapping the bottom of the barrel so to speak.
December 6th, 2021, 6:58 PM
missfiring cylinder what doe's 62 mean?
