Re: difficulty starting - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: difficulty starting
Posted by Seth [Email] (more from Seth) on Wed, 5 Sep 2012 13:01:29
In Reply to: difficulty starting, scott k, Wed, 5 Sep 2012 11:23:12
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I could be wrong, but it sounds like the fuel pump check valve is leaking, not keeping residual pressure to the fuel rail when the pump is not running. I don't know much about your car, if it even has a fpcv, but I believe most pumps now have such a valve built in to the pump. My old Volvo had an actual fpcv on the pump you could replace w/out replacing the pump.
My Viggen has trouble starting cold, probably because my fpcv is bad; I just let the fuel pump prime the fuel rail for 1-2sec before actually cranking the engine (when it's cold; ie, sat overnight). Seems to crank right up after I wait :)
Good luck, and let us know if you get it fixed!
Seth
'00 Viggen, 182k
posted by 199.89.158...
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