105
Diesel engine power deficient
Possible causes
Remedies
1) Intake blocked
1) Check the air cleaner, intake pipe, and clean or
replace the air cleaner filter elements.
2) High exhaust back pressure
2) Check the valve timing, adjust it if necessary; Clean
the exhaust pipe.
3)Insufficient boost pressure of turbocharged
system
3) Check and eliminate the leakage in the pipe and
joints.
4) Turbocharger is out of order; Compressor and
turbine passages are polluted, clogged or damaged;
4) Dean or replace the compressor casing and turbine
housing.
5) Bearing failure;
5) Replace it.
6) Carbon deposit and sludge in the back of turbine
and compressor impellers.
6) Clean it.
7) Middle cooler mangle, leave out
7) Check and replace it.
8) Fuel line blocked or leaky
8) Check the seal of fuel line and fuel filter choking, or
replace screw-on filter element.
9) Poor atomization of injector
9) Check the inject pressure, remove carbon, adjust and
repair
10) Incorrect distribution phase
10) Check and adjust the distribution timing and valve
lash
11) Cylinder gasket leakage
11) Tighten the cylinder head bolts according to the
stated torque and order, or replace the cylinder gasket.
12) Bad valve sealing
12) Grind or replace it.
13) Overheat engine or too high coolant
temperature
13) Check and repair the radiator, thermostat, and adjust
fan belt tension.
14) Piston ring worn-out or broken
14) replace it
15) Sensor doesn’t work
15) Check and replace it.
