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Old May 12, 2026 | 06:46 PM
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jdb1994
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Default Smoke test leak

Good afternoon. Can someone help me identify this part that is leaking during my smoke test this afternoon. It’s some sort of plastic fitting shaped in a 90°.

Thanks in advance.
I have a really nice video of it, but I can’t seem to get it to upload
Attached Files
File Type: mov
IMG_7979.mov (13.08 MB, 12 views)

Last edited by jdb1994; May 12, 2026 at 06:51 PM.
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Old May 12, 2026 | 07:04 PM
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Brake booster vacuum elbow.
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Old May 12, 2026 | 07:34 PM
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Awesome thanks for the information
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Old May 12, 2026 | 08:20 PM
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http://www.autoatlanta.com/porsche-p...section=107-10

Parts 3, 22, 23

There is an early version of this set up too. U may have to do some searching as this leak has been discussed before.
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Old May 12, 2026 | 08:35 PM
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Originally Posted by De Jeeper
http://www.autoatlanta.com/porsche-p...section=107-10

Parts 3, 22, 23

There is an early version of this set up too. U may have to do some searching as this leak has been discussed before.
Thank you, that diagram is super clear but my fitting that goes onto part number 3 is straight coming from a corrugated hose not a 90° elbow?
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Old May 12, 2026 | 08:52 PM
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Originally Posted by jdb1994
Thank you, that diagram is super clear but my fitting that goes onto part number 3 is straight coming from a corrugated hose not a 90° elbow?
After another search I found where some people had just taped that fitting? I’m guessing that is effective but looks like I also have to replace the O-ring at the inside of the elbow cause I had smoke coming from there as well, that’s why I just figured Id replace the whole thing and be done with it, 54.00 from pelican.
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Old May 13, 2026 | 03:31 AM
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They are notorious for leaking, had the same issue. Replaced the o ring (which immediately cracked into bits) and all is fine ever since.
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