Engine Noise Under Load
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| 1 | Is there a heavy knock when the engine is hot and torque is applied? | - | Go to Step 2 | System OK |
| 2 | Inspect the balancer and the pulley hub. Is the balancer of the pulley hub broken? |
- | Go to Step 3 | Go to Step 4 |
| 3 | Replace the broken balancer on the pulley hub. Is the repair complete? |
- | Go to Step 1 | - |
| 4 | Inspect the torque converter bolts. Are the bolts tightened to value specified? |
60 N.m (44 lb ft) | Go to Step 5 | Go to Step 6 |
| 5 | Tighten the torque converter bolts. Is the repair complete? |
- | Go to Step 1 | - |
| 6 | Inspect the accessory belts. Are the belts too tight or nicked? |
- | Go to Step 7 | Go to Step 8 |
| 7 | Replace and/or tension the belts to specifications, as necessary. Is the repair complete? |
- | Go to Step 1 | - |
| 8 | Inspect the exhaust system. Is the system grounded? |
- | Go to Step 9 | Go to Step 10 |
| 9 | Reposition the system, as necessary. Is the repair complete? |
- | Go to Step 1 | - |
| 10 | Inspect the flywheel. Is the flywheel cracked? |
- | Go to Step 11 | Go to Step 12 |
| 11 | Replace the flywheel. Is the repair complete? |
- | Go to Step 1 | - |
| 12 | Inspect the main bearing clearance. Is the clearance more than the value specified? |
0.040 mm (0.0016 in) | Go to Step 13 | Go to Step 14 |
| 13 | Replace the main bearings as necessary. Is the repair complete? |
- | Go to Step 1 | - |
| 14 | Inspect the rod bearing clearance. Is the clearance more than the specified value? |
0.063 mm (0.0025 in) | Go to Step 15 | System OK |
| 15 | Replace the rod bearings as necessary. Is the repair complete? |
- | Go to Step 1 | - |