41
Sl no Symptom Probable Cause Remedy
3 Loss of Power Output
Incorrect Valve Clearance Reset
Injection Nozzles not clean Clean
Injection pressure not ok Rectify
Injection Spray Pattern Poor Repair / Replace Nozzle
(Worn out piston and
sleeve/valve seat leakage/
cylinder head gasket leakage)
Repair / Replace worn out parts
Air cleaner Clogged Clean/Replace
Air leakage in intake System Repair
Muffler or Exhaust pipe
clogged
Repair/Replace
Feed Pump delivery quantity
and Pressure low
Rectify
Air restriction in intake
system
Rectify
turbine inlet / exhaust
manifold joint
Overhaul at Manufacturer authorized
service centre
Excessive dirt built up on
turbo charger compressor
wheel or diffuser vanes
Overhaul at Manufacturer authorized
service centre
Insufficient oil supply to
turbo charger
Check and rectify
4 Black Smoke
Air cleaner / Muffler not in
good condition
Correct or replace defective parts
Engine oil level is not Ok Restore Proper level
Incorrect fuel injection timing Reset
Incorrect Valve Clearance Reset
Improper fuel used Change fuel
Restricted Exhaust system Check and rectify
Injection Nozzles defective
Clean nozzles and adjust injection
pressure if required. Check spray
pattern and change Nozzle if required