Engine Noise Under Load
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 or the pulley hub broken? |
- | Go to Step 3 | Go to Step 4 |
| 3 | Replace the broken balancer or the pulley hub. Is the repair complete? |
- | Go to Step 1 | - |
| 4 | Inspect the torque converter bolts. Are the bolts tightened to specified value? |
45 N.m (33 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 specified value? |
0.026-0.046 mm (0.001-0.0018 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? |
0.019-0.07 mm (0.0007-0.0028 in) | Go to Step 15 | System OK |
| 15 | Replace the rod bearings, as necessary. Is the repair complete? |
- | Go to Step 1 | - |