Quote:
Originally Posted by VSS370z
I've been having start up issues for 2 months now after i upgraded from a walbro 255 to a aeromotive 340 fuel pump and is always when the car sits for hours and it never did it with the 255 fuel pump. I am starting to think i need to do this Idle Pressure thing to possibly sort things out but first i need to find that PDF.
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I would recommend getting a fuel pressure gauge in the car so you can see pressure at idle and startup. This would help indicate if there is a possible problem there.