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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Rear main seal

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Old Mar 11, 2021 | 05:45 PM
  #1  
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Rear main seal

Hello Yota tech,

Is it possible that a slow rear main seal leak can cause a vacuum leak? Thanks
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Old Mar 11, 2021 | 06:20 PM
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Originally Posted by jjswenn
Hello Yota tech,

Is it possible that a slow rear main seal leak can cause a vacuum leak? Thanks
NO. Not.
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Old Mar 12, 2021 | 05:32 PM
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From: Augusta, GA
Originally Posted by jjswenn
Hello Yota tech,

Is it possible that a slow rear main seal leak can cause a vacuum leak? Thanks
No, you can't get a vacuum leak from the rear main
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Old Mar 15, 2021 | 03:28 PM
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From: North Carolina
If your searching for a vacuum leak here’s a link to a homemade smoke tester on youtube. Very cheap to build.

I actually found 3 vacuum leaks after I built one. One of which was a tiny pinhole in a 1/8” vacuum cap

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Old Mar 17, 2021 | 09:51 PM
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Smoke tester

Right on, thanks for post that! I like it and will be getting that done. Great idea there.
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Old Mar 18, 2021 | 06:31 AM
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Thanks also for the link. I'm gonna try that out!
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