Let's talk about vacuum lines ! - 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 05-29-2006, 11:16 PM   #1
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Default Let'* talk about vacuum lines !

Alright , my 93 SE Bonnie used to get it pretty good off of the line . At that time she had about 70,000 miles (6 yrs ago) .I used to take a lot of these punks with their fart cans on their ricers easily at a light . Now she'* got about 103,000 - I use my Chevy truck with a Pontiac LS1 out of a Trans am under the hood moslty (love that engine too!) . But now the Bonneville just doesn't have the oomph that she used to . I've been looking at the vacuum lines and some of them aren't looking so hot . Is it possible that a series of low level leaks are contributing to this problem? Any other ideas ? The plugs were changed about 3 years ago with stock repl. and look fine . Also have a fram air hog filter . Haven't checked the fuel pressure yet but I do have a gauge to do so . I don't have a manual for this car yet so I don't know what fuel pressure should be but I know this can rob you of power . This was an issue I dealt with in my truck after doing the swap and once it was corrected I noticed a big improvement in power. Thanks for you all'* input !
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Old 05-29-2006, 11:18 PM   #2

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Swap out the vacuum lines, remember the ones by the driverside fender going to the evap canister. See if that cures things for you.
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