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VACUUM LEAK TEST

posted by  Don Foster on  Fri Jul 19 10:56 CST 2002
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last visit: Sun Oct 5 11:53 CST 2014
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Find or buy a 3' length of new fuel hose. Stick one end in your ear and snoop around the intake system with the other end listen for any pronounced "hisssssssing...".

(If you use a grubby piece of hose, you'll suffer from DES, which means "dirty ear symndrome." How do I know this?)

Another trick, for small leaks such as loose intake manifolds or shrunken injector seals, is to spray them with carb cleaner. This will temporarily seal a leak and a rough idle will smooth out for 10-15 seconds. The carb cleaner will be "inhaled" and burned, and the excess washes grime off your engine. So it's a win-win.
--
Don Foster (near Cape Cod, MA)






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New VACUUM LEAK TEST
posted by  sosborniv  on Fri Jul 19 09:37 CST 2002 >


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