fuel question?
05-20-2001, 07:35 AM
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fuel question?
Here's my situation,I swapped out the tbi for a carb a while back and yesterday i finally put a fuel pressure gauge in,What psi should it be at,and should the pressure change or stay at a steady psi?I noticed that after warmed up i shut it off and started it again it was only at 3.5,I drove it home about 2 miles and it was at 8.5 But when i first put it on it was at 5.5 psi.
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05-21-2001, 11:39 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
How long are you willing to wait for a good answer? Or, are you willing to take any old response? Were you aware that the quality of the response is directly proportional to the quality of the information provided?
I assume you used the original TBI in-tank pump, correct? What carb do you have? What kind of regulator did you use? Is this a street driver, or highly modified? I'll guess mildly modified, Edelbrock, daily driver, 2-port regulator.
You should have used a 3-port regulator, with return port. If not, that's half your problem. Street fuel pressure should be 5-7 psig, and should maintain that at WOT.
FWIW, a better subject line might have been "Fuel Pressure Question".
Hope that helps. Good luck. Good day. LOL here, too...
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.
[This message has been edited by five7kid (edited May 22, 2001).]
I assume you used the original TBI in-tank pump, correct? What carb do you have? What kind of regulator did you use? Is this a street driver, or highly modified? I'll guess mildly modified, Edelbrock, daily driver, 2-port regulator.
You should have used a 3-port regulator, with return port. If not, that's half your problem. Street fuel pressure should be 5-7 psig, and should maintain that at WOT.
FWIW, a better subject line might have been "Fuel Pressure Question".
Hope that helps. Good luck. Good day. LOL here, too...
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.
[This message has been edited by five7kid (edited May 22, 2001).]
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