For 1990-2009 cars

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Is there a light knock when the engine is hot? | -- | Go to Step 2 | System OK
2 | Is detonation or spark knock evident? | -- | Go to Step 3 | Go to Step 4
3 | Inspect the engine timing and the fuel quality. Was the problem found? | -- | Go to Step 1 | --
4 | Inspect the torque converter bolts. Are the bolts tightened to the 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 manifold. Is there an exhaust leak at the manifold? | -- | Go to Step 7 | Go to Step 8
7 | Tighten the bolts or replace the gasket. Is the repair complete? | -- | Go to Step 1 | --
8 | Inspect the rod bearing clearance. Is the clearance within the specified value? | 0.019-0.07 mm (0.0007-0.0028 in) | Go to Step 9 | System OK
9 | Replace the rod bearings, as necessary. Is the repair complete? | -- | Go to Step 1 | --