Service manual

Table Of Contents
6. Fuel injection equipment
143
Fault Cause Remedy
7. Loud knocking. (1) Injection timing is too fast or too slow.
(2) Injection from nozzle is improper.
Fuel drips after each injection.
(3) Injection nozzle starting pressure is too high
(4) Uneven injection.
(5) Engine overheats, or insufficient
compression.
Adjust
Adjust
Adjust
Adjust
Repair
8. Engine
exhausts
too much
smoke.
When exhaust
smoke is
black:
(1) Injection timing is too fast.
(2) Air volume intake is insufficient.
(3) The amount of injection is uneven.
(4) Injection from nozzle is improper.
Adjust
Inspect and repair
Adjust
Repair or replace
When exhaust
smoke is
white:
(1) Injection timing is too slow.
(2) Water is mixed in fuel.
(3) Shortage or lube oil in the engine.
(4) Engine is over-cooled.
Adjust
Inspect fuel system, and
clean
Repair
Inspect