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Old 01-26-2010, 10:51 AM   #10
mick_the_ginge
Citizen Mick
 
Member#: 27646
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
2003 Sleeved 2.5
Oil Dry Sump Goodness

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Quote:
Originally Posted by mindchatter View Post
Bump for some more knowledge being laid down. I've got an '04 STi that has always run flawlessly - got tuned for E85 approx 5,000 miles ago and started misfiring in all cylinders about 2,000 miles back.

I've replaced plugs (which looked brand new w/10k on 'em) and did fuel filter today. Misfired within 30 miles. I'm cleaning the MAF tomorrow and then am looking at injectors as the culprit.

I did a compression check 10,000 miles ago and came in at 130 in all 4 cylinders. Plugs when pulled showed no signs of det and I'm tuned conservatively. The fuel is doing something, I just can't figure out what.
If I had to guess then I would guess that you cracked one of the plugs when you changed them. It's a common issue if the plugs are over torqued when installed. What did you TQ the new plugs to when you replaced them?
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