94 L27 Fuel Pressure? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-08-2006, 08:36 PM   #1
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Default 94 L27 Fuel Pressure?

Ok i tested my Fuel Pressure today thinking thats maybe whats been cousing my sputtering problem iv had for a long time and how its getting a little worse now.

When Idel its arouns 35ish, Reve it it to like 2K and hold it spikes at like 39 and while at 2K it drops to around 32ish. Never got over 40.

So Bad, Good, or Ok may be cousing my problem
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Old 09-08-2006, 09:38 PM   #2
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as i told you you want a Pressure of 41-47....
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Old 09-08-2006, 09:40 PM   #3
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Quote:
Originally Posted by 1993 SLE
as i told you you want a Pressure of 41-47....
yeah i know i posted this befor i got a hole of u and i forgot what u said befor
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Old 09-09-2006, 02:16 AM   #4
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That'* very low. I suspect you're having starting problems unless you let it prime for 2 seconds, then start before it can bleed down?
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Old 09-09-2006, 02:42 AM   #5
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Quote:
Originally Posted by willwren
That'* very low. I suspect you're having starting problems unless you let it prime for 2 seconds, then start before it can bleed down?
yeah always let it run for a few seconds, befor i start it/

But yeah at low RPMs like when you tak off VARY slow its like shakes like it wants to stall but doesn;t but after i give it just a little more gas its fine..

Im going to replace the Filter, chack it again, and if its still low, then its Fuel pump/ tank time :(
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Old 09-09-2006, 10:50 AM   #6
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i am assuming that you are getting this info from a scanner? Can autozone or someone run a scanner and tell me that? I would like to know what mine is........
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Old 09-09-2006, 10:58 AM   #7
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Fuel pressure gauge attached to the pressure fitting on the fuel rail, mrbell.
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Old 09-09-2006, 11:00 AM   #8
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Quote:
Originally Posted by willwren
Fuel pressure gauge attached to the pressure fitting on the fuel rail, mrbell.
Oh, ok so I just have to go and but a gauge and undo that cap? Are there any specif instructions? Mine just acts finny at idle sometimes and I would like to know of its a vaccum leak or maybe low fuel pressure.

Thanks Bill
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Old 09-09-2006, 11:16 AM   #9
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Quote:
Originally Posted by bandit
yeah always let it run for a few seconds, befor i start it/
explain?
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Old 09-09-2006, 11:20 AM   #10
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Quote:
Originally Posted by ELMACHOGERACHO
Quote:
Originally Posted by bandit
yeah always let it run for a few seconds, befor i start it/
explain?
He turns the key on, without starting the car, to let the fuel pump run and pressurize the system for a few seconds. Then, he starts the car.
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