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Old 12-03-2003, 09:23 AM
Kestas Kestas is offline
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,804
Re: How to detect vacuum leaks?

Originally posted by tonyhito
What is the best way to know if you have a vacuum leak and detect it if you have one?
One good way is to spray solvent (starting fluid, carb cleaner, etc.) at suspect areas. When the idle goes up, you've found your problem. You can also use propane by attaching a rubber hose extension to the torch head and flowing gas over suspect areas. Propane is less messy than solvents but more flammable, so you have to be careful.
95 E320 Cabriolet, 140K
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