Engine Noise Under Load
| Cause | Correction |
|---|---|
| Low oil pressure | Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing . Repair or replace, as required. |
| Detonation or spark knock | Verify the correct operation of the ignition. Refer to Symptoms - Engine Controls . |
| Loose torque converter bolts | Inspect the torque converter bolts and flywheel. Repair, as required. |
| Cracked flywheel - automatic transmission | Inspect the flywheel bolts and flywheel. Repair, as required. |
| Excessive connecting rod bearing clearance | Inspect the following components and repair, as required: • The connecting rod bearings • The connecting rods • The crankshaft |
| Excessive crankshaft bearing clearance | Inspect the following components and repair, as required: • The crankshaft bearings • The crankshaft journals • The cylinder block crankshaft bearing bore |