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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Sun, May-06-2018, 04:11:17 PM   #1
bhennrich
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Default Vacuum leak test

I can tell that I have a vacuum leak due to the very bad idle / stall out when cold. Give her three min to warm up and all is fine. Not sure what the best troubleshooting options are but am looking at this


to help me diagnose. Has anyone tried this one? Any suggestions on starting troubleshooting without a smoke box?
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Old Sat, Jun-16-2018, 06:09:55 PM   #2
bhennrich
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Default Re: Vacuum leak test

I am still trying to figure my leak out. I have the smoke tester in hand but do not know what line I need to disconnect in order to put the smoke in. I know about removing the air filter and capping off the MAF with a rubber glove. Just not sure what line to remove and if it needs to be capped off as well? Any help would be appreciated!
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Old Sat, Jun-16-2018, 07:32:03 PM   #3
Braymond141
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Default Re: Vacuum leak test

CTejuco and I used the stinger on his car a few weeks ago. Works incredibly well, but holy shit does the oil burn nasty. Expect to feel horrible after and the smell sticks with you.

Brake booster port at the manifold is a great entry point.
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Old Sat, Jun-16-2018, 09:01:44 PM   #4
bhennrich
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Default Re: Vacuum leak test

Quote:
Originally Posted by Braymond141 View Post
CTejuco and I used the stinger on his car a few weeks ago. Works incredibly well, but holy shit does the oil burn nasty. Expect to feel horrible after and the smell sticks with you.

Brake booster port at the manifold is a great entry point.


How do I get the snap clamp off the hose? I donít think I have a tool to reinstall that kind of clamp


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Old Thu, Jun-21-2018, 05:04:53 PM   #5
j0rdan J
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Default Re: Vacuum leak test

I used the oil dipstick tube as entryway for the smoke machine. Put a glove over the Intake boot and clamp it.
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Discussing Vacuum leak test in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)