Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Thank you for using JA. I'm Baz, one of the automotive experts, I try to be available in the afternoon on weekdays and in the evenings on the weekend. I apologise if I do not respond to your question promptly, I can assure you that I will respond as soon as I can. Thank you
Blue smoke indicates that the engine is burning oil so, oil is getting into or very close to the combustion chamber (inside the cylinders). The oil can get in past the piston rings or the valve stem seals.
I would recommend doing a compression test on all cylinders, this will tell you if there is an issue with the valves or pistons.
We can only advise on what you can do or get done at a garage. If you don't have any experience, I wouldn't recommend trying to tackle this job yourself.
Apologies, I can't take calls at the moment.
Any half decent garage should have the equipment to carry out a cylinder compression test.