Seeing blue smoke pour out of a diesel engine when you press the accelerator can be alarming. It often means oil is entering the combustion chamber and burning along with fuel. This problem rarely fixes itself. If ignored, it can lead to higher oil use, power...
Hearing a sharp knocking sound when you start a diesel engine on a cold morning can be worrying. The noise often fades as the engine warms up, but the reason behind it matters. Cold-start knocking is common in diesel engines, yet it can point to fuel, air,...
