Smoke testing for a vacuum leak

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Ger_Frank

Junior Member
Joined
Apr 17, 2024
Posts
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Location
San Antonio
Ram Year
2022
Engine
5.7 HEMI
I did a smoke test for a suspected vacuum leak. I hooked up the tester to the vacuum line going into the brake booster.

Now my silly question.

A lot of smoke came out of the vacuum pump. Is that normal?

In my mind it's normal since the pump should suck the vacuum and since I pushed smoke the reversed way it would smoke. But I am also no mechanic, so I just want to check and make sure I am not seeing this wrong.

Thank you for your help.
 
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