FREQUENT DIESEL KNOCKING
I
Classification
I
Main inspection or adjustment areas
I
Fuel
I
I.
Valve
Compression
1
2.
Piston ring
1
3.
Piston
I
[Point
I]
While the engine is idling, loosen the high pressure pipe nuts on the nozzle side for each cylinder in turn,
and check whether or not there are changes in unusual sounds from the engine.
If the unusual sounds from the engine stop when the nuts are loosened, it means that the injection nozzle
of that cylinder is not injecting or operating properly.
Others
LARGE AMOUNT OF EXHAUST SMOKE WHILE DRIVING
4.
Cylinder
1.
Clogging of the air cleaner
Large amount of black smoke is generated
Symptom
Main inspection or adjustment areas
Constantly generated
At low speeds only
[Po
i
n
t
11
nearly fully open.
1.
Clogging of the air cleaner
1. Injection pump
Also generated at speeds other than low speeds
1. lnjection timing (early)
2.
lnjection pump
3.
lnjection nozzle
1
1. Defective fuel
[Point
I]
Black smoke generation condition check
Check whether black smoke is only generated at low engine speeds while the accelerator is fully open or
Large amount of white smoke is generated
1
2.
Valve
Symptom
Constantly generated
Main inspection or adjustment areas
1
6.
lnjection timing (late)
1
7.
lnjection pump
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