Suspect vaccum leak on Series 1 GM 3.8


Old 10-21-08, 11:55 AM
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Join Date: Jan 2006
Location: Owen Sound Ontario Canada
Posts: 541
Question Suspect vaccum leak on Series 1 GM 3.8

How are the best ways to find if a vaccum leak exists around the intake of a GM 3.8 series 1 engine
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Old 10-21-08, 03:24 PM
Join Date: Jun 2008
Location: Eastern Georgia
Posts: 486
You can spray WD-40 or carb cleaner around the gasket, if the engine speeds up you have found your leak. Be sure to check the hose for the PCV the rubber tends to detererioate(sp ??) and cause vacuum leaks.

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