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03-13-2014, 01:59 PM #1
- Join Date
- Mar 2014
2000 Jimmy, misfire question but not the typical ones
Good afternoon everyone, thanks ahead of time for any responses.
I picked up a 2000 Jimmy the other day with what I was told needed a new spider and intake gaskets... I got it started up but now I have the dreaded P0300!!!! I have done all of the following...
ac Delco dizzy, rotor and cap
checked for vacuum
checked fuel pressure... holding 60psi.
now... I have a wet number 1 plug and backfiring..
The only thing I haven't done, and I'm sure I I'll be told to, is check compression. So here is my question
Lets say I check compression and find a cylinder or two that fail, what then? Assuming I'd have to pull the valve covers and check (wish I would have when I changed intake gaskets!!!) what will I be looking for? I've heard a sticking valve could also cause my problems, is this true?
Yesterday, 01:24 PM #2
What engine? do the compression test and check your timing first. let us know.
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