Dodge 2001 Ram 1500 Owner's Manual page 1323

9 - 176 ENGINE 8.0L
ENGINE 8.0L (Continued)
CONDITION
CONNECTING ROD NOISE
MAIN BEARING NOISE
LOW OIL PRESSURE
POSSIBLE CAUSES
1. Insufficient oil supply
2. Low oil pressure
3. Thin or diluted oil
4. Excessive connecting rod
bearing clearance
5. Connecting rod journal out of
round
6. Misaligned connecting rods
1. Insufficient oil supply
2. Low oil pressure
3. Thin or diluted oil
4. Excessive main bearing
clearance
5. Excessive end play
6. Crankshaft main journal out of
round or worn
7. Loose flywheel or torque
converter
1. Low oil level
2. Faulty oil pressure sending unit
3. Clogged oil filter
4. Worn oil pump
5. Thin or diluted oil
6. Excessive bearing clearance
7. Oil pump relief valve stuck
8. Oil pump suction tube loose,
broken, bent or clogged
9. Oil pump cover warped or
cracked
CORRECTION
1. Check engine oil level.
2. Check engine oil level. If ok,
Perform oil pressure test. (Refer to
9 - ENGINE/LUBRICATION -
DIAGNOSIS AND TESTING) engine
oil pressure test/specifications
3. Change oil to correct viscosity.
(Refer to 9 - ENGINE/
LUBRICATION/OIL - STANDARD
PROCEDURE) for correct
procedure/engine oil specifications
Measure bearings for correct
clearance with plasti-gage. Repair
as necessary
5. Replace crankshaft or grind
journals
6. Replace bent connecting rods
1. Check engine oil level.
2. Check engine oil level. If ok,
Perform oil pressure test. (Refer to
9 - ENGINE/LUBRICATION -
DIAGNOSIS AND TESTING)
3. Change oil to correct viscosity.
4. Measure bearings for correct
clearance. Repair as necessary
5. Check crankshaft thrust bearing
for excessive wear on flanges
6. Grind journals or replace
crankshaft
7. Inspect crankshaft, flexplate/
flywheel and bolts for damage.
Tighten to correct torque
1. Check oil level and fill if
necessary
2. Install new sending unit
3. Install new oil filter
4. Replace oil pump assembly.
5. Change oil to correct viscosity.
6. Measure bearings for correct
clearance
7. Remove valve to inspect, clean
and reinstall
8. Inspect suction tube and clean or
replace if necessary
9. Install new oil pump
BR/BE