and other auxiliaries not in
good condition or improperly
installed
Check and adjust
V Belt Loose or damaged
Adjust belt tension and replace if
damaged
Crankshaft pulley not
installed properly
Rectify
Alternator bearing worn out Replace
Noise comes from
rocker cover and
neighbourhood
Incorrect valve clearance Adjust
Valve Spring deteriorated
or damaged
Replace
Valve and Valve seat contact
improper
Rectify
Oil Supply to rocker shaft
inadequate
Rectify
Injection opening pressure
low
Repair/Replace
Injector spray pattern poor Repair / Replace
Noise comes from Gear
case & Neighbour hood
Timing gear backlash not ok Replace gear
Noise comes from
cylinder head & Crank
Case
Excessive ply in camshaft Rectify
Piston, Piston ring and
cylinder sleeve worn out
Replace
Connecting rod small end and
big end bush worn out
Replace
Main bearing worn out Replace
Excessive crankshaft end ply Correct by using correct thrust washer
Piston pin worn out Replace
Loose flywheel or crankshaft Rectify
Worn Cam and tappet Replace
Inferior quality of fuel (Low
cetane number)
Use correct fuel