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For you guys asking about smoke machines. instead go and buy a pack of cigarettes, take a long drag and blow the smoke into a vacuum hose. Open the throttle body to let smoke into the intake piping. then run the test. =)
 

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Gents. I have a question about the tiny PCV hose that goes from TB to VC. During my boost leak testing, I have large amount of air rush thru this line. Do I need to cap it when doing the boost leak test? If yes, good news for me! If not, then what could be my problem of leak? Thanks!
 

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Do you think capturing the smoke from a smokebomb and somehow piping it into the intake will work? I am not sure if those smokebombs will have anything which can damage the engine.

Also, any suggestions on how to do this same test to find leaks in vacuum lines?
 
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