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Common trouble and troubleshooting remedies for injection pump
Possible causes
Remedies
Injection failure:
① No oil in oil tank.
②
Air or leaks in oil line.
③
Oil line clogged.
④
Fuel pumps failure.
⑤
Plunger precision pair
worn out, snapped or
spring cracked
Check and add oil to adequacy.
check and remove air ,block up the
leakage
Check and remove the blockage.
Determine the location of the trouble and repair
it.
Determine the location of the damaged part and
repair or replace it.
Insufficient or uneven outlet oil
① Insufficient inlet oil pressure.
②
Leaky oil outlet valve or
spring crack.
③
Plunger precision pair is
out of order due to dirty or
much wear.
④ Loose plunger control gear.
Check the condition of fuel pump and blockage
of oil line, if necessary, remove it.
If there is leakage, lap in pair; if there is damage,
replace parts.
Check and wash the oil line and precision pair,
and replace the much worn one.
Check for the looseness of the plunger control
gear, tighten to the signal if necessary; regulate
the injection pump on test bench better.
