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PART VIII: ENGINE TROUBLE SHOOTING GUIDLINES:
Sl no Symptom Probable Cause Remedy
1 Engine Difficult to Start
Inadequate fuel quantity Add Fuel
Poor Quality of fuel or oil
used
Change fuel or Oil
Air trapped in fuel system
If trouble persists Check for
Loose Piping & Connectors
Restriction for fuel flow due to
blockage in fuel pipes
Possibility of air being sucked
in from the feed pump
Water trapped in fuel system Drain water from fuel tank, fuel filter
Fuel leakage from injection
Pump piping
Repair/ Replace Cracked or loose
pipes and other parts
Feed Pump defective Repair
Fuel Pipes, feed pump gauze
filter, fuel filter, air cleaner
clogged
Clean/Replace
Incorrect fuel injection timing Reset
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
Ignition key defective Replace
Starter Motor defective Repair / Replace
Fuel injection Pump defective
Starting delivery
Variation between cylinders
Battery Discharged Recharge Battery