how do you check for vacumm leaks

shawpdx1

Registered User
just curious on how to check for vacumm leaks and whats the best way I read a thread on using propane but not sure how its done , I have a ping under bost and somewhat of a hit and miss rough idle at random times already done the plugs double plat, wires , fuel filter ect, thanks
 
Hmm, the way they do it with propane is to use one of those torches (not lit up of course :eek: ) and just start moving it around all the seals like where the intercooler meets the IC pipes etc.... just go all over the place, if you hear a difference in the sound of the engine around a certain spot you might have found a vac leak.
 
Start By Listening Really Carefully For A Hissing Noise. Usually It Doesnt Work That Easy, But Its Worth A Shot.
Otherwise,spray Alittle Carb Cleaner Or Brake Cleaner Around All The Spots That Have Vaccuum Fittings And The Couplers On The Intake System. You Will Hear The Motor Surge When You Found It.
Good Luck.
 
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