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Old 05-26-2010, 05:14 PM   #6
Scooby Newbie
Member#: 173938
Join Date: Mar 2008
Chapter/Region: NWIC
Location: Oregon
06 sti
matte black


Have you made any changes that could be related to the problem?
Does your car have a rough/unstable idle ? If not its most likely not a vacuum leak

test the fuel pressure regulator

Look very closely at the vacuum tube going to the f.p.r. for cracks and/or leaks

Also check your pcv valve and system, up to 30% of engine intake air can passthrough the pcv system. If its clogged/restricted you will run rich.
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dazedone is offline   Reply With Quote