Abnormal Exhaust Colors Of Engine - LONCIN LC2V80FD Maintenance Manual

Part IV Faults Diagnosis

4-4 Abnormal exhaust colors of engine

Abnormal
exhaust color
Black
White
Blue
- 28 -
Air filter excessively dirty
(Clean air filter)
Fault of carburetor
(Refer to Section 5-2-4)
Overloaded
(Alleviate load)
Low temperature of engine
(Normal starting)
Water contained in fuel
(Use new fuel oil of specified quality)
Engine oil contained in fuel
(Use new fuel oil of specified quality)
Excessive wear of cylinder/piston/piston ring
(Refer to Section 5-2-9)
Too much engine oil added
(Refer to Section 3-2)
Fault of cylinder head
(Refer to Section 5-2-7)