C63 exhaust smoke

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Jas C63

Active Member
Joined
Nov 7, 2014
Messages
75
Location
West Yorkshire
Car
E92 M3 comp pack
Is it common for one of these to put out so much white smoke on start up and also omit a burning smell :confused:
 
What year/mileage?

Mine smoked upon cold start and used oil, but I didn't notice a burning smell.

There are numerous YouTube vids of M156 cold starts to compare with.
 
I only have a bit of blackish/grey and sometimes white smoke on cold start whilst it is revving high which I assume is the soot build up and high fuel mix. as long as no funny colour smoke is coming out when driving slowly and its warm I wouldn't worry
 
Relax - occasional smoke on cold start no issues, regular event - get it checked out. 5300 miles = still a baby, the engine is really run in between 15-18k miles! Mine changed at around 18k miles, stop drinking oil, noise changed, no more smokey starts etc.
 

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