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Statement Cause Remedy
(4) Nozzle injection pressure or unsuitable of injection angle
correction or replacement
(5) Decline function feed pump
correction or replacement
(6) Shortage of suction valume
Maitenance of air cleaner
(7) Throttle valve fix
correction or replacement
Overheat (1) Shortage of coolant
Suppliment & check of leakage
(2) Weakness of tension of radiator cap pressure valve spring replacement
(3) Radiator core system clog
correction or replacement
(4) Oil cooler system clog replacement
(5) Fan belt release, wear or damage
correction or replacement
(6) Thermostat operation inferiority replacement
(7) Water pump operation inferiority replacement
(8) Uncorrect of injection timing adjustment
(9) Cylinder head gasket defect replacement
4) Noise of Engine
Statement Cause Remedy
Crank shaft (1) bigger of oil clearance due to bearing or crank shaft wear grind crank shaft
bearing or replacement
(2) Crank shaft side wear grind crank shaft
or replacement
(3) Oil port system clog Wash
(4) Bearing strain replacement &
grind crank shaft
Conn. rod & (1) Connecting rod bearing wear replacement
bearing (2) Crank pin side wear
grind or replacement
(3) Connecting rod bend replacement
(4) Bearing seize
grind or replacement
Piston, piston pin (1) Piston & bigger of oil clearance due to piston ring wear crank shaft grind
or replacement
and pinston ring (2) Piston or piston pin wear replacement
(3) Piston strain replacement
(4) Piston ring damage replacement
Other (1) crank shaft throttle bearing wear replacement
(2) cam shaft end pulley bigger replacement
throttle bearing
(3) Idle gear end pulley bigger
replacement throttle collar
(4) Timing gear backlash being excessive replacement
(5) Uncorrect of valve clearance adjustment
(6) valve strained into valve guide replacement
(7) Valve spring damage replacement
(8) valve seat insert defect adjustment
(9) Tappet, cam excessive wear replacement
(10) rokcer arm & rocker am shaft excessiver wear replacement
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