Hi,
I have a Mercediz Benz C 220 diesel. The only issue with the car is Winter. It won't start in the morning. I have taken to the mechanic, he says it could be several reason with it. To me he is not sure whats he talking about. Is it anyone can help me in this situation?

Regards

 

Not sure what type of fuse in a c220 for the glow plugs, but look for that or if the glow plugs and, glow plug relay are operating properly. Poor compression would be the worst case scenario. Then if you are running ULSD the fuel should not be an issue if running alternative fuel that could be your problem.