Heavy Knock Hot With Torque Applied

- Broken balancer or pulley hub. Replace parts as necessary.
- Loose torque converter bolts.
- Accessory belt too tight or nicked. Replace as necessary.
- Exhaust system grounded. Reposition as necessary.
- Flywheel cracked.
- Excessive main bearing clearance. Replace as necessary.
- Excessive rod bearing clearance. Replace as necessary.