LONCIN LC2P73F - Abnormal Exhaust Color Analysis

Part IV Faults Diagnosis
- 21 -
4-4 Abnormal exhaust colors of engine
(Refer to Section 3-2)
(Refer to Section 5-2-9)
(Use new fuel oil of specified quality)
(Use new fuel oil of specified quality)
(Normal starting)
(Alleviate load)
(Refer to Section 5-2-4)
(Clean air filter)
Abnormal
exhaust color
Black
White
Fault of carburetor
Overloaded
Air filter excessivel
y
dirt
y
Low tem
p
erature of en
g
ine
Water contained in fuel
En
g
ine oil contained in fuel
Excessive wear of c
y
linder/
p
iston/
p
iston rin
g
Too much en
g
ine oil added
Blue
(Refer to Section 5-2-6)
Fault of c
y
linder head