Originally Posted by Daron97SSE
I had a pump replaced on my car, but now am having some rough running/idle/misfiring issues... I'm wondering if it'* fuel related. What problems are you having specifically?
I've got some KR that'* been around ever since I rebuilt the top half of my engine. The KR could be from a few things including the fact that my head gaskets are leaking oil, my small downpipe, exhaust leak (false kr), etc.
My idle is a little high (+250 rpm) for what ití* set at and is rough, and i've got KR when I accelerate.
I've ruled out a vacuum leak around the TB and between the upper intake manifold/HVII/lower intake manifold, and I also have new plugs/wires, and newer coil packs. My fuel trims are near perfect too.
I plan on replacing the head gaskets along with some other things within the next couple months (need $) but I was trying to make sure I rule everything else out first.
I'm thinking maybe the fuel pump because it has 122k on it, I go lean whenever I hit the gas, and maybe ití* messing with my idle.
But then again it could just be my head gaskets.