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Old 05-18-2013, 07:39 PM   #7
Formerly Camaroc5
CamaroC-17's Avatar
Drives: 2010 Camaro LT/RS M6
Join Date: May 2010
Location: USA
Posts: 1,647
Originally Posted by strych9 View Post
Hmm. Sounds like the fuel pump might be draining back when you leave it sit for a bit, like a bad check valve. Only way to be sure is to put a fuel pressure gauge on it and see if it holds pressure when you shut it down.
Hmm..never done that before. What I don't get is that yesterday (first day with new motor) everything was fine. Had multiple starts and one start was late at night after it sat awhile.

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