1C-20 - TROUBLESHOOTING 90-823225--1  1096
Crankshaft Area
Location Possible Causes
Crankshaft timing sprocket
Crankshaft area, front of engine, timed to 
Timing chain
engine speed
Main bearing
Rod bearing
Crankshaft area center of engine timed to
Crankshaft striking pan or pan baffle
Crankshaft area, center of engine, timed to 
en
ine s
eed
Main bearing
 
Rod bearing
Loose flywheel cover
Crankshaft area rear of engine timed to
Loose coupler
Crankshaft area, rear of engine, timed to 
en
ine s
eed
Loose flywheel
 
Main bearing
Rod bearing
Crankshaft area throughout engine timed to
Loss of oil pressure
Crankshaft area, throughout engine, timed to
en
ine s
eed
Main bearings
 
Rod bearings