Why Does a China V Vehicle Emit Blue Smoke When Burning Urea?

[DelNora]

China V vehicle emitting blue smoke when burning urea may be due to piston and ring wear, among other issues. The specific reasons for smoke emission from the front cover are analyzed as follows: 1. White smoke: Caused by a small fuel injection advance angle leading to incomplete combustion; slight water leakage in the cylinder liner or water in the fuel can also cause white smoke. 2. Black smoke: Caused by an imbalance in the air-fuel ratio; a drop in cylinder pressure; early fuel injection timing can lead to black smoke; failure of the smoke limiter on the fuel injection pump can also cause black smoke during rapid engine acceleration. 3. Blue smoke: Often caused by burning engine oil. In this case, check whether the engine cylinder liner is worn, if the rings are aligned, or if the valve sealing rings are aged and deformed, which is usually accompanied by crankcase blow-by.