Condition
|
Action
|
Worn accessory drive components (abnormalities such as severe
cracking, bumps or missing areas in the accessory drive belt and/or
misalignment of the system components.)
|
|
1. |
Inspect the accessory drive components. |
|
2. |
Repair or replace all damaged components. |
|
Low oil pressure
|
Insufficient or poor oil supply to crankshaft and connecting rod
bearings.
|
1. |
Perform oil pressure test. |
|
2. |
Repair or replace all damaged components. |
|
Leaking and/or sticking fuel injection nozzle (A stuck fuel
injection nozzle can cause a noise similar to a damaged piston, rod
or rod bearing.)
|
|
1. |
Inspect the cylinder balance with scan tool to
help locate the cylinder that is the source of the noise. |
|
2. |
If you cannot locate the cylinder that is the
source of the noise, diagnose the engine for mechanical
damage. |
|
3. |
If it has been determined that the fuel injection
nozzle is causing the noise, replace the fuel injection
nozzle. |
|
Loose and/or damaged crankshaft pulley
|
|
1. |
Inspect crankshaft pulley and pulley bolt. |
|
2. |
Repair or replace all damaged components. |
|
Loose torque converter bolts
|
|
1. |
Inspect torque converter bolts and flywheel. |
|
2. |
Repair or replace all damaged components. |
|
Loose and/or damaged flywheel
|
|
1. |
Inspect flywheel and flyweel attaching bolts. |
|
2. |
Repair or replace all damaged components. |
|
Excessive piston pin-to-bore clearance
|
|
1. |
Inspect the piston, piston pin, and the connecting
rod. |
|
2. |
Repair or replace all damaged components. |
|
Misaligned or bent connecting rod
|
|
1. |
Inspect connecting rod and connecting rod
bearings. |
|
2. |
Repair or replace all damaged components. |
|
Excessive connecting rod bearing clearance
|
|
1. |
Inspect the connecting rod bearings, connecting
rods, crankshaft and crankshaft journals. |
|
2. |
Repair or replace all damaged components. |
|
Excessive crankshaft bearing clearance
|
|
1. |
Inspect the crankshaft bearings and crankshaft
journals. |
|
2. |
Repair or replace all damaged components. |
|
