Download THE 6.2 LITER DIESEL ENGINE

2. Engine Systems and Construction
NOISE TROUBLESHOOTING (CONT’D)
CONDITION
Engine has heavy knock
hot w ith torque applied.
Engine has light knock hot
in light load conditions.
POSSIBLE CAUSE
CORRECTION
A. Broken balancer or
pulley hub.
1. Replace parts as
necessary.
B. Loose torque converter
bolts.
1. Tighten bolts.
C. Accessory belts too tight
or nicked.
1 Replace and/or tension
to specs as necessary.
D. Exhaust system
grounded.
1 Reposition as
necessary.
E. Flywheel cracked.
1 Replace flywheel.
F. Excessive main bearing
clearance.
1. Replace as necessary.
G. Excessive rod bearing
clearance.
1. Replace as necessary.
A. Air leak.
1. See Section 4.
B. Improper timing.
1. Check engine tim ing.
C. Loose torque converter
bolts.
1. Tighten bolts.
D. Exhaust leak at
manifold.
1. Tighten bolts and/or
replace gasket.
E. Excessive rod bearing
clearance.
1. Replace bearings as
necessary.
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