White smoke in engine bay F82 M4

[TyronF82]

Hi all,

I notice smoke from my F82 M4 engine bay on startup, it seems more like vapour than thick smoke. After driving for a few minutes, it seems to go away. The strange part is that this only happens after my car has been standing for a while (not daily driven), however, if I drive it daily, there is no sign of smoke. Any ideas??

Thanks

 

[Urban963]

Coolant leak perhaps. What does it smell like?

 

[TyronF82]

Coolant leak perhaps. What does it smell like?

Smells like burn, sometimes. No warning indicators no evidence of leakage either (or at least nothing I can see)

 

[Mytfine]

Coolant leak

 

[AshG108]

Yep, that sounds like coolant leak, check the coolant bottle... it possibly has not hit the minimum level yet. Check the coolant reservoir.

 

[AryM]

Yes, could be coolant leak or turbo/ turbo seals

 

[TurboLlew]

Coolant leak. You can smell them LONG before there's a warning. On my F10 M5, it would vapourise on the turbos (I have PTSD from that smell LOL) so tracking it down the first few times was interesting. Because of all the fans, I somehow thought it was some burning debris from the road in the middle of the car somewhere.

 

[krsht3]

Funny enough, I couldn't smell this on my F30... nose is buggered... only visual inspection at Silverstone Radiators finally confirmed the issue...

Coolant leak. You can smell them LONG before there's a warning. On my F10 M5, it would vapourise on the turbos (I have PTSD from that smell LOL) so tracking it down the first few times was interesting. Because of all the fans, I somehow thought it was some burning debris from the road in the middle of the car somewhere.

 

[///Avi]

The charge cooler is known to leak on the S55. BMW usually replaces it under plan if it leaks. If it wasn’t done under plan then it could be this.