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AST
C
HINA
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HIPBUILDING
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NSTITUTE
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ACTORY
22
SIYANG
四洋
R
7.3 BLACK SMOKING FROM EXHAUST
Causes
Remedial method
(1). The engine is overloaded
(2). Fuel injector defeats
(3).Poor fuel quality
(4)The fuel injection advance angle
is incorrect.
(5)Combustion is incomplete
Reduce the load properly.
Renew one.
Change the fuel as specification
Refer to 7.1(3)
Check the injector, fuel injection advance
angle, cylinder gasket and cylinder
compression pressure etc.
7.4 LOW LUBE OIL PRESSURE
Causes
Remedial method
(1)
Lube oil in oil sumps too low.
(2)
Lube oil pipe leaks
(3)
Lube filter obstructed.
(4)
The lube oil is too thickness
(5)
Pressure sensor or lamp defeats
(6)
Gear pump worn out and
clearance is over
Fill up to the right mark.
Tighten all connectors.
Replace lube filter.
Replace the lube oil as specification
Replace a new one.
Replace gears pump and adjust the
clearances
7.5 ENGINE KNOCKING
Causes
Remedial method
(1).The fuel injection advance angle is
incorrect.
(2) Air or water is mixed in fuel system
(3)Fuel supply for each cylinder is
unequal.
(4)Wear of the certain components
exceeds specification limits
Refer to 7.1(3)
Refer to 7.1(2)
Refer to 7.2(4)
Replace the worn parts.
