My car has covered 74500 miles . I had just driven about 15 mins on the motorway and as i parked up i saw exhaust smoke in the rear view mirror , i left the engine running and walked round the back and could see light blue smoke coming from the exhaust , it was'nt belching dark blue or smelt of bur'nt oil . Is this normal to see the exhaust fumes out of the exhaust. Oil level is ok and it drives ok temperature is ok as well. Just a bit worried about something expensive happening !!!

 

There are 2 things that commonly cause blue smoke from the tail pipe :
1. worn valve guides/seals.
2. worn piston rings.

I would not think that under normal circumstances a W112 engine with 75K miles would smoke at all .....

Take it to a qualified mechanic for an opinion.

 

A few other items spring to mind - overfill of oil - blocked breather

These people may be able to assist

Crewe Engines

Best of luck

TonyB

 

Thanks TonyB , Where abouts is the breather on the engine ??

Thanks

 

Blocked breather pipe may be a red herring was thinking non Mercedes engines as they have this complex emission system with air pump, talk to the Crewe people next week

 

Am i reading your post wrong about non - mercedes engines ? thought the crossfire did have a mercedes engine !!

Thanks for replys

 

When I posted re breather pipe I was thinking generally not mercedes; the merc engine in a crossfire has a complex emissions system which includes the air pump which you rarely find elsewhere. It could be something as simple as worn stem seals but that would mean a top end strip - you need a professional diagnosis