Can't get my Fuel pressure down, HELP!
07-17-2008, 08:08 AM
#1
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Can't get my Fuel pressure down, HELP!
Installed a B+M FPR, and a Walbro 255lph pump on my LS powered 92EG.
installed a cheap/generic fuel pressure gauge, and with the car running, *vac hose off or on* its always over 100PSI, which I know is not ideal...
The second I turn the car off, it drops down to like 55 or so.
Am I setting the FPR wrong? Do I need to drill it out like I've seen done to help drop the pressure? Help?
* no matter WHERE I adjust the FPR to, with the hose on OR off, its still above 100*
Could the gauge be bad?
installed a cheap/generic fuel pressure gauge, and with the car running, *vac hose off or on* its always over 100PSI, which I know is not ideal...
The second I turn the car off, it drops down to like 55 or so.
Am I setting the FPR wrong? Do I need to drill it out like I've seen done to help drop the pressure? Help?
* no matter WHERE I adjust the FPR to, with the hose on OR off, its still above 100*
Could the gauge be bad?
07-17-2008, 08:21 AM
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Re: Can't get my Fuel pressure down, HELP! (JEGD16Z6)
With a Walbro 255 pump I fear the gauge is accurate, and it goes to EXACTLY 100PSI when you prime, but over 100 once running.
07-17-2008, 08:30 AM
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Found this:
Looks like the FPR is just Pegged and can't dump fuel fast enough because of how small it is.
Need to drill it out a spec
http://www.theoldone.com/articles/regulator/
Looks like the FPR is just Pegged and can't dump fuel fast enough because of how small it is.
Need to drill it out a spec
http://www.theoldone.com/articles/regulator/
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