I did some smoke tests on my car to find vacuum leaks.
Found one in the edge of the air check valve (part.no.1163170627), managed to seal it with some silicone sealant.
I did find no other leaks but that could be due to the fact I don't quite know where to connect the smoke tester.
Tried to connect to the fuel pressure regulator (part.no 13531711540) but the smoke just blew out of the intake manifold, from the blue tube show on the photo below (I blew the smoke in at the yellow arrow in photo 1 and it came out at the yellow arrow in photo 2).
Is that normal??
Any tips how to perfectly perform a smoke test and where best to connect are welcome.
Smoke testing
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- 635sharknose
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Smoke testing
Paul
Instagram: @635sharknose
1987 635CSi Bronzitbeige
Instagram: @635sharknose
1987 635CSi Bronzitbeige
- 635sharknose
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Re: Smoke testing
I think I found it.
The blue tube attached to the bottom side of the manifold needs to be connected to a small brown tube that goes into the interior, to which I believe goes to an interior sensor.
Can someone confirm this?
The blue tube attached to the bottom side of the manifold needs to be connected to a small brown tube that goes into the interior, to which I believe goes to an interior sensor.
Can someone confirm this?
Paul
Instagram: @635sharknose
1987 635CSi Bronzitbeige
Instagram: @635sharknose
1987 635CSi Bronzitbeige
- hornhospital Online
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Re: Smoke testing
Confirmed. It uses manifold vacuum to draw interior air through the interior temperature sensor.
Ken Kanne
'84 633CSi "Sylvia"; '85 635CSi "Katja";'85 325e "Hazel Ann"; '95 M3 "Ashlyn"
'84 633CSi "Sylvia"; '85 635CSi "Katja";'85 325e "Hazel Ann"; '95 M3 "Ashlyn"
- 635sharknose
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Re: Smoke testing
Great! Thanks for the confirmation. Will connect and proceed with the smoke test to make sure everything is sealed properly.
Paul
Instagram: @635sharknose
1987 635CSi Bronzitbeige
Instagram: @635sharknose
1987 635CSi Bronzitbeige
- 86_6series
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Re: Smoke testing
Send smoke thru the AFM tube at the front of #6.
https://www.realoem.com/bmw/enUS/showpa ... Id=13_0262
https://www.realoem.com/bmw/enUS/showpa ... Id=13_0262
86-635CSi
96-MB C220 SOLD
98-740i
71-Continental MK3
96-MB C220 SOLD
98-740i
71-Continental MK3
- 635sharknose
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Re: Smoke testing
This may help to attach the smoke machine to the intake.....
https://www.amazon.com/gp/product/B07QX ... UTF8&psc=1
https://www.amazon.com/gp/product/B07QX ... UTF8&psc=1
- 86_6series
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Re: Smoke testing
Here's a post I sent a couple of days ago.
I have an easy way to do a smoke test.
Purchase a bee smoker:
https://www.bing.com/search?q=bee+smoke ... HRDEF&sp=1
Use an empty plastic soda bottle and tape a small hose to spout of smoker
and the top of the bottle. Cut the bottom of the bottle and tape to end of rubber boot
#6.
https://www.realoem.com/bmw/enUS/showpa ... Id=13_0262.
Load the smoker with your choice of smoke chips, light the chips and pump the smoke thru the system.
Works for me every time, also not an expensive solution.
Good luck.
I have an easy way to do a smoke test.
Purchase a bee smoker:
https://www.bing.com/search?q=bee+smoke ... HRDEF&sp=1
Use an empty plastic soda bottle and tape a small hose to spout of smoker
and the top of the bottle. Cut the bottom of the bottle and tape to end of rubber boot
#6.
https://www.realoem.com/bmw/enUS/showpa ... Id=13_0262.
Load the smoker with your choice of smoke chips, light the chips and pump the smoke thru the system.
Works for me every time, also not an expensive solution.
Good luck.
86-635CSi
96-MB C220 SOLD
98-740i
71-Continental MK3
96-MB C220 SOLD
98-740i
71-Continental MK3