Diesel Engine Blue Smoke When Accelerating and Oil Burning Causes

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.
Why Diesel Engine Knocking When Cold Happens on Startup

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.