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Using smoke machine to find vacuum leaks

419 Views 3 Replies 4 Participants Last post by  Blasirl
Question so where would I put the plug in for the smoke to go through the system to find the vacuum leak?? I have a 2012 Chevy Cruze Lt 1.4 Please someone help me
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There are a number of ports on the inlet manifold.

Are you sure you don't have a ruptured diaphragm in the valve cover?
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Use artifical enrichment. Wherever the idle picks up or drops will be your vacuum leak.

I've always used carb spray. It's taught in class to use a propane bottle. With appropriate hose setup. I don't know where one would find one though.
Try removing this sensor

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