For 1990-2009 cars

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. Refer to Fastener Tightening Specifications. Are the bolts tightened to specified value? | -- | Go to Step 5 | Go to Step 6
5 | Tighten the torque converter bolts. Refer to Fastener Tightening Specifications. 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. Refer to Engine Mechanical Specifications. Is the clearance more than the specified value? | -- | 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. Refer to Engine Mechanical Specifications Is the clearance more than the specified value? | -- | Go to Step 15 | System OK
15 | Replace the rod bearings, as necessary. Is the repair complete? | -- | Go to Step 1 | --