For 1990-2009 cars

Light knock hot may be caused by one or more of the following conditions:

• | Loose torque converter bolts--tighten the bolts. Replace the components if necessary.

• | Exhaust leak at the manifold--tighten the bolts. Replace the gasket if necessary.

• | Excessive rod bearing clearance--replace the bearings as necessary.

• | Detonation or spark knock--refer to Engine Controls.