Attached table: fault cause and remedy
Air intake clogged (air
cleaner logged)
Check air cleaner and air intake pipe, clean or
replace lter element
Exhaust back pressure is
too high
Check the valve-timing and exhaust pipe adjust
and repair
Insufcient pressure in
supercharging system
Check and block up the leakage of pipeline
Faults in turbocharger Replace the turbocharger assembly
Intercooler damaged Replace or repair
Leakage or choke of fuel
line
Check the sealing of fuel pipe and connector
fuel lter and fuel line repair clean or replace
the lter element
Excessive wear for
injection pump or
governor
Repair or replace
Smoke-limiter diaphragm
of injection pump
damaged
Repair or replace
Poor atomizing
Check the injecting pressure clean away the
carbon deposit in nozzle adjust and repair
injector
Incorrect timing of valve
gear or fuel delivery
Check and adjust it
Oil level in the oil sump is
too high
Check the oil-dipstick and drain off
unnecessary oil
Leakage in cylinder
gaskets
Check the compressed pressure at hot state,
replace cylinder gaskets
Piston ring broken the
clearance of main bearing
is too large
Replace worn parts or overhaul the engine
Cylinder liner or piston
worn or piston scufng
Check the injecting pressure, clean away the
carbon deposit in nozzle, adjust and repair
injector