meh havent had time to check out my car much...
yanked the MAF connector and seemed to run a tad better
plugged MAF back in, unplugged EGR elec connectors
was curious and checked compression on 1,3,5 and all within 170-180psi, i suppose pretty good tolerance for 180K (but isn't the #2 the problem child?)
after disconnecting the EGR leads, car runs great. Heavy acceleration I hear pinging (due to no recirculation i assume) but have almost normal power... not quite but pretty darn close..
so the initial lean 171 and 300 misfire could be the egr sticking open, and the fact that I have driven the lumina on very short trips.. 1.5 miles to work with not alot of time on the highway...
again detailing my symptoms:
1) under extremely light pedal, i can usu accelerate lightly with engine sounding fine
2) moderate pedal, or slight incline, engine loses power dramatically... can lose speed on moderate incline and sometimes on slight incline
3) pedal to the floor, engine loses even more power (this is when egr is suppose to be closed)
think that rules out a clogged cat, since i have good accel with egr disconnected, whew
thinking carbon in the egr, so if i can get to it this weekend im going to unbolt the egr, clean it, then feel around in the egr passages in the intake... if i feel any clogging, going to yank the upper intake manifold and clean it and the trottle body and EGR....
and i have done a lower/uppper intake on this car so know this is a pretty easy one
have the two replacement EGR gaskets (one is a tomco Kleen Screen)
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from memory i just need an upper manifold gasket and a throttle body gasket?
anything else I would need here? I dont want to bother a neighbor to take to met the parts place when i should have had it to begin with.
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have a sandblaster for my compressor... any reason to not use it to get the varnish out of the inside? is some varnish ok? (ie: it's smoother than the metal) and just leave it alone, only cleaning out carbon ?
~kev