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01-01-2005, 07:37 PM | #1 | |
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Location: Defiance, Ohio
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fuel rail not holding pressure
Hello, On my 1998 Aurora (114,000 miles) with new plugs, wires, fuel filter and FPR I noticed it seems to have more long hard start problems than it did before I changed everything. It seems like the relief valve to drain the pressure of does not hold a hole lot of pressure. Where else could it be losing the fuel pressure? There are no leaks anywhere that I can see. Thanks
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01-02-2005, 04:35 AM | #2 | |
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Did you fit the FPR 'O' rings properly?
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1996 Aurora Black / grey |
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01-02-2005, 09:40 AM | #3 | |
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Re: fuel rail not holding pressure
It was an Ac Deco and everything was already on it. I just put it in and snapped the o-ring on it. Would it leak if it was on wrong or just act up? Thanks
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01-02-2005, 11:17 AM | #4 | |
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Re: fuel rail not holding pressure
maybe an injector is leaking down when the car is shut off??
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01-02-2005, 11:27 AM | #5 | |
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Re: fuel rail not holding pressure
I hooked up a pressure guage to it and it was dropping down to 0 as soon as the car was off. I took the FPR back out and found that the small O-ring on the bottom was just a little bigger than the one I took out and it cocked it in the groove. I put the old O-ring off of the other FPR and now I am holding 42 PSI for over 15 minutes, no leakdown and about 42-43 at idle. I will see now if it stops my hard start problems. Thanks
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01-04-2005, 06:11 PM | #6 | |
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Re: fuel rail not holding pressure
When I hook up the Fuel pressure guage now and fill the system with car off it rises about 4-5 psi after the fuel pump quits running then after about 15 minutes it loses 5-6 psi. Is there something wrong or is it normal to lose pressure after sitting? Thanks
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