Did a fuel pressure test today and its running at 41 psi ? - Page 2 - 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 11-08-2006, 07:14 PM   #11
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Quote:
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with key on and bleed the line then off and back on its around 48 psi, is that how he wanted me to do it ?
Read above. How LONG did it take to bleed down?
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Old 11-08-2006, 08:16 PM   #12
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6 minutes or a little longer...
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Old 11-08-2006, 08:36 PM   #13
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Is the test procedure the same for 93 bonneville ssei?
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Old 11-08-2006, 11:16 PM   #14
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Quote:
Originally Posted by Tr00p3r
Is the test procedure the same for 93 bonneville ssei?
Yes.
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Old 11-09-2006, 01:17 AM   #15
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Quote:
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Quote:
Originally Posted by Tr00p3r
Is the test procedure the same for 93 bonneville ssei?
Yes.
But the pressures are NOT the same.
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Old 11-09-2006, 09:17 AM   #16
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Quote:
Originally Posted by willwren
Quote:
Originally Posted by Damemorder
Quote:
Originally Posted by Tr00p3r
Is the test procedure the same for 93 bonneville ssei?
Yes.
But the pressures are NOT the same.
Nope they sure arent...

Series II is 48-55 Psi... Falling a few psi short at dead idle( Vacume applied to the FP reg ) is normal... You could see several Psi lower than the low rating...

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Old 11-09-2006, 04:10 PM   #17
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so is mine ok ? Im at 51 with the vacumn FPR off ?
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Old 11-09-2006, 04:19 PM   #18
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Quote:
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so is mine ok ? Im at 51 with the vacumn FPR off ?
A little on the lower side... But within range, I'd say for the time being you are ok... What pressure do you have with the Vacume applied and the engine idling?

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Old 11-09-2006, 06:29 PM   #19
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about 42 psi idling with the line conected almost the same as the Park that only has 70k on it.
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Old 11-09-2006, 09:12 PM   #20
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cvc, with those readings there should be nothing wrong with your pump or regulator for running conditions. If you are having a hard start condition, then we will need to know what the fuel pressure drops to after the pump cycles off. This is refered to as a bleed-down test.

What is your reason for checking the pressure? Whats your complaint?
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