Strange fuel pressure reading... key on/engine off. Help?
#1
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Strange fuel pressure reading... key on/engine off. Help?
I've been having some issues with the car, where it's leaning out when going to WOT. After a week's worth of troubleshooting and ruling things out, it's now down to one of two things: fuel pump or injectors. The motor is stock, including all fuel systems.
Checking the fuel pressure today, and this came up... At idle, fuel pressure remained steady at 58-60psi. Trying a key on/engine off test, however, it jumped up to 55 and quickly dropped back down below 45psi.
From what I understand, this isn't right...but I have no idea why. Help?
Checking the fuel pressure today, and this came up... At idle, fuel pressure remained steady at 58-60psi. Trying a key on/engine off test, however, it jumped up to 55 and quickly dropped back down below 45psi.
From what I understand, this isn't right...but I have no idea why. Help?
#2
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Yes that's bout right. You have to have the car running to keep the fuel pressure up. The pump only bumps on for 2 seconds then turns off. Mine does the same thing. Have you changed your fuel filter?