For 1990-2009 cars only
Heavy knock hot with torque applied may be caused by one or more of the following conditions:
| • | Broken balancer or pulley hub (replace parts as necessary) |
| • | Loose torque converter bolts |
| • | Accessory belts too tight (adjust the tension to specifications) |
| • | Accessory belts nicked (replace as necessary) |
| • | Exhaust system grounded (reposition the exhaust as necessary) |
| • | Flywheel cracked |
| • | Excessive main bearing clearance (replace as necessary) |
| • | Excessive rod bearing clearance (replace as necessary) |
| • | Low quality fuel |
