M635CSi - Too much smoke from exhaust?
Moderators: GRNSHRK, ron, bfons
M635CSi - Too much smoke from exhaust?
Hey everyone,
Need some feedback from you guys...hopefully to put my mind at ease a bit...I'm concerned that the M is producing too much exhaust smoke. The smoke is definitely not blue in color but it appears thicker/whiter than just clear "steam". Being that the past few days have been exceptionally cold in the northeast, its even more noticeable than usual so I thought I'd take a quick video (click YouTube link below) of the car idling this morning after a 20 minute drive. The outside temp was 15 degrees Fahrenheit.
Any thoughts would be appreciated. Thanks guys and Happy New Year!
LINK TO YOUTUBE VIDEO: https://youtu.be/rC2BgCAOOWg
Need some feedback from you guys...hopefully to put my mind at ease a bit...I'm concerned that the M is producing too much exhaust smoke. The smoke is definitely not blue in color but it appears thicker/whiter than just clear "steam". Being that the past few days have been exceptionally cold in the northeast, its even more noticeable than usual so I thought I'd take a quick video (click YouTube link below) of the car idling this morning after a 20 minute drive. The outside temp was 15 degrees Fahrenheit.
Any thoughts would be appreciated. Thanks guys and Happy New Year!
LINK TO YOUTUBE VIDEO: https://youtu.be/rC2BgCAOOWg
Justin
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1985 M635CSi
1988 635CSiA
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1985 M635CSi
1988 635CSiA
Re: M635CSi - Too much smoke from exhaust?
Can you tell if it is using more oil or coolant than usual? Otherwise we are just guessing...
http://www.Drive4Corners.com
'79 635CSi Revival
'80 635CSi
'83 633CSi Callaway Turbo continued as 1988 535is Turbo
SOLD: '81 635CSi/A
'79 635CSi Revival
'80 635CSi
'83 633CSi Callaway Turbo continued as 1988 535is Turbo
SOLD: '81 635CSi/A
-
- Platinum Member
- Posts: 1649
- Joined: Mon Jul 16, 2007 2:58 pm
- Location: Cheltenham, U.K.
Re: M635CSi - Too much smoke from exhaust?
As per above, but just wanted to add a couple of points:
What rpm are you idling at?
That looks like a stunning car!
Cheers,
Rob
What rpm are you idling at?
That looks like a stunning car!
Cheers,
Rob
"Most of it necessary; all of it enjoyable." LJKS
'84 635CSi, dogleg...itbs and supercharger????? Eaton Mess
'84 635CSi, dogleg...itbs and supercharger????? Eaton Mess
Re: M635CSi - Too much smoke from exhaust?
wattsmonkey wrote: ↑Fri Dec 29, 2017 6:11 pm As per above, but just wanted to add a couple of points:
What rpm are you idling at?
That looks like a stunning car!
Cheers,
Rob
Thanks Rob. The idle is another small concern - after initial start, the car will idle at 700-750 rpm. But after a few minutes of driving, the it doesn't get down this low and ends up hovering around/just under 1000 rpm.
Justin
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1985 M635CSi
1988 635CSiA
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1985 M635CSi
1988 635CSiA
Re: M635CSi - Too much smoke from exhaust?
Oil and Coolant levels appear to be good. Car had oil service and coolant flush from my local German shop a month or so after I acquired it in May 2017 and has been driven about 1,000 miles since. Current mileage is 69,000.
I wanted a valve adjustment done in May as well, but the shop had difficulty sourcing the correct shims for the M88 motor, so the adjustment never happened; they have since been able to source the shims so i will be rescheduling this work soon. Other work that was done in the past 6 months included a new OEM muffler, fuel pump, clutch slave cylinder, cap/rotor, and belts.
Justin
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1985 M635CSi
1988 635CSiA
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1985 M635CSi
1988 635CSiA
Re: M635CSi - Too much smoke from exhaust?
At 15 deg F ( -9 deg C ) that looks perfectly normal to me . Water vapor in exhaust gas condensing .
Check your expansion tank level regularly or after a drive but at that temp. I'd expect to see every other car in your street doing the same .
Don
Check your expansion tank level regularly or after a drive but at that temp. I'd expect to see every other car in your street doing the same .
Don
1981 635 series 1
Re: M635CSi - Too much smoke from exhaust?
Yeah it looks like it's cold out!
That's all I saw :)
Cheers,
Ray
That's all I saw :)
Cheers,
Ray
'85 ///M635
- 86_6series
- Platinum Member
- Posts: 1069
- Joined: Mon Apr 02, 2007 10:08 pm
- Location: West Nyack, NY
Re: M635CSi - Too much smoke from exhaust?
+1--I'm in Rockland NY and the exhaust vapor on most cars in this temperature
will show condensation.
Where are you in NJ, maybe we can meet in better weather and share war stories?
Bob V
86-635CSi
96-MB C220 SOLD
98-740i
71-Continental MK3
96-MB C220 SOLD
98-740i
71-Continental MK3
Re: M635CSi - Too much smoke from exhaust?
+2 exhaust looks normal for 15F.
Dave
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1985 635CSi US
Cosmos Blue/Pearl Beige
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1985 635CSi US
Cosmos Blue/Pearl Beige
Re: M635CSi - Too much smoke from exhaust?
Thanks for the comments, guys! I guess i'm just being a bit paranoid.
Justin
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1985 M635CSi
1988 635CSiA
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1985 M635CSi
1988 635CSiA
Re: M635CSi - Too much smoke from exhaust?
Hey Bob,86_6series wrote: ↑Sat Dec 30, 2017 4:20 pm+1--I'm in Rockland NY and the exhaust vapor on most cars in this temperature
will show condensation.
Where are you in NJ, maybe we can meet in better weather and share war stories?
Bob V
I'm in Piscataway NJ.
-Justin
Justin
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1985 M635CSi
1988 635CSiA
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1985 M635CSi
1988 635CSiA
Re: M635CSi - Too much smoke from exhaust?
Seems normal for the temps we're having in the NE
88 635i
87 325iC
87 325iC
Re: M635CSi - Too much smoke from exhaust?
We are about to suffer a cold snap here in the UK, but nothing like as bad as the conditions you chaps are enduring in the US East.
Hey Justin, one of your M635 pictures made it onto the Wikipedia E24 as a reference photo. How did you manage that?
Hey Justin, one of your M635 pictures made it onto the Wikipedia E24 as a reference photo. How did you manage that?
E24 M635CSi
Re: M635CSi - Too much smoke from exhaust?
Yep that is my car on the Wiki page.
Justin
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1985 M635CSi
1988 635CSiA
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1985 M635CSi
1988 635CSiA