Help!!!!!!!!92 bonnie 3.8 no supercharged - 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 06-17-2007, 11:59 AM   #11
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That'* not a valid test at all. Low pressure will still drool out fuel to wet the plugs, but the fuel won't atomize enough to ignite.

We need to know your pressure with key on, ignition off, then at idle, then at idle with the vacuum line pulled off the FPR.
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Old 06-17-2007, 12:10 PM   #12
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I just went through this myself. The pump probably burned out because no one changed the fuel filter and it was putting too much backpressure on the pump. Have someone use the green fuel pump jumper line and listen with your head near the tank, you should hear a very smooth humming, if you hear a very smooth humming still, you might be able to get away with just replacing the fuel filter for right now, and if it still dies, then you'll definitely need a fuel pump.

But, as mentioned, definitely report back with your fuel pressure data first, thats the best way to tell if we're heading in the right direction.
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Old 06-17-2007, 01:11 PM   #13
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5psi
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Old 06-17-2007, 01:14 PM   #14
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5 PSI? Uhh yeah, that'* a dead pump right there. Sucks you put all that $$ into parts you didn't need.
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Old 06-17-2007, 01:14 PM   #15
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How did you check it?
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Old 06-17-2007, 01:18 PM   #16
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so i need to put it up and ck. fuel pump in gas tank?
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Old 06-17-2007, 01:39 PM   #17
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I just cked.and did what you said..... yes my plug was wet.....I do hear somthing.
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Old 06-17-2007, 01:41 PM   #18
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fuel filter changed,lines ok, thremostate opening.???? :(
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Old 06-17-2007, 01:59 PM   #19
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Quote:
Originally Posted by Bonnie owner
I just cked.and did what you said..... yes my plug was wet.....I do hear somthing.
well the low psi verifies a weak pump.
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Old 06-17-2007, 02:03 PM   #20
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ok i'll get fuel pump done, i need to take back to middas!? mines in gas tank , i cannot do it myself..
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