Yuchai YC60-9, Operator'S Manual

Page: 97 / 154

4-28
Trouble shooting
Trouble Cause Solution
1. Engine can’t be
started or started
difficultly

There is some trouble with
starter

Replace or repair starter

Battery isn’t charged enough

Charge or replace the battery

Pre-heating line or glow plug is
incorrectly used

Repair or replace the glow plug

Injection timing is incorrect

Check the injection timing

Fuel supply circuit is plugged

Clean or replace the fuel circuit

Fuel filter is plugged

Clean or replace the fuel filter

There is water
、
dust or air in
fuel system

Get rid of air, clean fuel circuit

Injection nozzles is dirty or
injection pressure is too low

See your authorized dealer for
repair

Injection pump is trouble

Consult with agent

Fuel is empty

refuel

Air intake and exhaust system
is plugged

Unblock the air intake and
exhaust system
2.Engine shock, runs
irregularly or stops

A lot of air run about

Consult with agent

Fuel filter is plugged

Clean the filter

There is dirt or air in fuel
system

Exhaust and clean fuel circuit

Oil filter is plugged ,injector is
dirty or trouble

See your authorized dealer for
repair

High-pressure pipe is
damaged

Replace the high-pressure pipe

Fuel is absent

Refuel

Accelerator joining can’t be
adjusted

Consult with agent

Injection pump is trouble

Consult with agent

Injection timing is incorrect or
injector plugged

Check injection timing and
injector
3.Engine power rate
lowered

Get rid of the air

Air gets into the fuel system

Fuel circuit supply is blocked

Check and clean

Injection timing changed

Readjust according to
specification

Injector badly work

Check work pressure and
injection vapors

Air filter is plugged

Clean filter cartridge

The gap of the intake and

Adjust the gap of the valve or