fuel psi
06-25-2013, 10:40 PM
#1
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fuel psi
how much psi should stay in the lines after running, and how long should it hold pressur?
06-26-2013, 05:05 AM
#2
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Car: 1991 Camaro RS
Engine: BBC 509 Merlin ii 9.6:1 pump gas
Transmission: ATI pro th350 sfi case. TSI 5500 st
Axle/Gears: Strange S60 4:10s
Re: fuel psi
off the top of my head. you want it to maintain 30+psi after you shut it off for at least 30min to a hr.
06-26-2013, 08:56 AM
#4
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Re: fuel psi
wow...ummm it doesnt hold any at all, i can shut it off and it drops right away... down to zero... with a new regulator... when you install the fpr is there an o ring that is supposed to go between the rail seat and the regulator? the kit came with a bunch of o rings, but nowhere to install the? even the directions, {not that i needed them lol} did show anything either
06-26-2013, 08:58 AM
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Car: 1991 camaro rs
Engine: 3.1 - looking to upgrade to 3400 hy
Transmission: 700r4
Axle/Gears: Stock? Lol
Awkward. Yes there's an oring between the fpr and fuel rail.
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06-26-2013, 12:54 PM
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Car: 2003 Hyundai Tiburon GT
Engine: 2.7L V6
Transmission: 6-speed
Axle/Gears: 4.41
Re: fuel psi
Double check you got the FPR screws tight. I know that when I swapped mine out I almost had to strip the holes in the rail to get the FPR to hold pressure.
IIRC, there wasn't any o-rings in the regulator... They were probably for the injectors and the fuel lines. Seems to me that the diaphragm was sandwiched between the cover and the rail and that was that.
IIRC, there wasn't any o-rings in the regulator... They were probably for the injectors and the fuel lines. Seems to me that the diaphragm was sandwiched between the cover and the rail and that was that.
06-26-2013, 03:25 PM
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Car: 1991 camaro rs
Engine: 3.1 - looking to upgrade to 3400 hy
Transmission: 700r4
Axle/Gears: Stock? Lol
Huh. Mine came with an o ring. Maybe thats why you had to tighten it so much for it to hold pressure
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06-26-2013, 04:02 PM
#8
06-27-2013, 11:42 PM
#9
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06-29-2013, 09:06 PM
#10
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Re: fuel psi
i put in a new pump, seams to hold pressure a little better, but its dumping fuel out the return line... half a beer bottle in about 5 seconds.. ummm us that normal?
06-30-2013, 11:16 AM
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Car: 1991 camaro rs
Engine: 3.1 - looking to upgrade to 3400 hy
Transmission: 700r4
Axle/Gears: Stock? Lol
While its running or just priming? If just priming the pump then yes. running it should return a decent amount as well iirc only like 30% of fuel is even used from the pump the rest returns back.
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