43
Sl no Symptom Probable Cause Remedy
5
Improper Exhaust
Colour
Full Load stopper on
governor control lever loose
Adjust and tighten the stopper bolt
Excessive Valve clearance Adjust
Incorrect fuel injection timing Reset
Injection Nozzle defective
Clean nozzles and adjust injection
pressure if required. Check spray
pattern and change Nozzle if required
Air cleaner or muffler not in
good condition
Correct or replace defective parts
Poor Compression Pressure
Check / Correct or Replace.
Defective Cylinder head
gasket
Worn Valve and Valve Seat
Valve Spring set
Worn or damaged piston ring
Excessive clearance between
piston and cylinder sleeve
6 Engine Over Heating
Fan belt loose
Adjust belt tension. Check for damage
and cracks
Coolant level incorrect
Add Coolant and if level continues to
reduce inspect for leakages, loose
hose, clamps and damaged hoses
Radiator fins Clogged Clean and correct core bends if any
Thermostat defective Replace
Radiator Cap Pressure Valve
defective
Replace
Water Pump Impeller
damaged / Malfunction
Replace
Inferior Engine oil quality Change oil
Low engine oil level Replenish
Coolant Contaminated
Flush Cooling system and change
coolant
Oil Cooler defective Repair
Oil Pump defective Repair
Cylinder head gasket leaky Replace
Air cleaner or muffler clogged