Mitsubishi 6M60-TL - Troubleshooting

11-8
Symptoms
Low power output Abnormal engine noise
Reference Gr
Possible causes
Cylinder head and valve
mechanism
Incorrect valve clearance O O
Defective cylinder head gasket O O
Worn valve and valve seat; carbon deposits O O
Weakened valve spring O O
Defective rocker shaft and bracket O
Poor lubrication of rocker shaft bracket O
Timing gears
Incorrect backlash in timing gears O
Poor lubrication of timing gears and idler shaft O
Camshaft
Excessive end play in camshaft O
Worn camshaft O
Pistons and connecting
rods
Worn/damaged piston ring groove(s) O O
Worn/damaged piston ring(s) O O
Worn piston pin and connecting rod small end O
Crankshaft
Excessive end play in crankshaft O
Incorrectly fitted crankshaft pulley O
Worn/damaged crankshaft pins and connecting rod bear-
ings
O
Worn/damaged crankshaft journals and main bearings O
Fuel system
Supply pump faulty O O
Gr13E
Defective injector O O
Air trapped in fuel system O Gr13A
Cooling system
Malfunctioning cooling system components O
Gr14
Loose/damaged V-belts O
Intake and exhaust
system
Clogged air cleaner O O
Gr15Clogged muffler O O
Malfunctioning turbochargers O O
Incorrect oil viscosity O Gr12
Improper fuel O
Incorrectly fitted piping and hoses O
Defective/incorrectly fitted alternator and other auxiliaries O
TROUBLESHOOTING