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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

checked fuel pressure at rail and got 34 lbs with vacum line attached good or bad?

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Old 06-13-2003, 11:36 PM
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checked fuel pressure at rail and got 34 lbs with vacum line attached good or bad?
car runs like crap just trying one thing at a time book calls for 41 to 47 lbs at idle with vaccum line attached so is this a problem so if so were should i start to look thanks.
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Old 06-14-2003, 12:42 AM
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That sounds about right with the line on. It's pretty easy to pull it if you want to check it with it off.
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Old 06-14-2003, 04:27 AM
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The Helms manual calls for 41-47 with the vacuum line off.
Last edited by anaik; 06-14-2003 at 04:49 AM.
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