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Old 05-19-2013, 08:07 AM   #12
Formerly Camaroc5
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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.
I tried something. I put key yo run position this morning for 5 seconds,turned to off and then started. So it primed the fuel pump. It started better sounding like only one cylinder was off but quickly recovered. So I think you may be on to something. Is this in anyway related to any of the work they did putting in a new engine?

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