Was at the shop on a scanner for about a 1/2 hour. Pretty much told me what i already knew.
For some reason it is pulling fuel out. Duh, I know that, that's why im here im thinking.
It has 0 misfires.
He did suggest changing all O2 sensors for a start as they are 25yo as far as i know.
He also suggested the miss i think im feeling is something out of balance. Well the Flex plate is the original one but the Harmonic balancer is a new one supplied by the machine shop that did the short block.
Maybe it is the wrong one?
Matching it up with pictures of new ones mine looks the same as near as i can tell without taking it off and matching it up to a known good one. Looks like it is a Dorman brand.
I don't think that's it though because sometimes it feels worse than other times.
So anyway i changed all 4 sensors and reset the ecu fuel trims. Went for about a 20 mile drive and the trims are the same.
Here is a pic of the 4 O2 sensors. The white ones are pre and the black ones are post.
Do they offer any clues to the problem?
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