Cause 
 | Correction 
 | 
Seized accessory drive system component 
 | 
- Remove accessory drive belt or belts.
 
- Rotate crankshaft by hand at the balancer or flywheel location.
 
 
 | 
Broken timing chain 
 | 
|     •  | Inspect timing chain and gears. |  
  
 | 
Seized timing chain or timing gears 
 | 
|     •  | Inspect timing chain and gears for foreign material. |  
  
 | 
Seized camshaft 
 | 
|     •  | Inspect camshaft and camshaft bearings. |  
  
 | 
Bent valve in cylinder head 
 | 
|     •  | Inspect valves and cylinder heads. |  
  
 | 
Hydraulically locked cylinder: 
|     •  | Coolant/antifreeze in cylinder |  
  
 | 
- Remove spark plugs and check for fluid.
 
- Inspect for a sticking fuel injector.
 
- Inspect for broken head gasket or gaskets.
 
- Inspect for cracked engine block or cylinder head.
 
 
 | 
Seized automatic transmission torque converter 
 | 
- Remove the torque converter bolts.
 
- Rotate crankshaft by hand at the balancer or flywheel location.
 
 
 | 
Seized manual transmission 
 | 
- Disengage the clutch.
 
- Rotate crankshaft by hand at the balancer or flywheel location.
 
Refer to Unit Repair Manual - Manual Transmission. 
 
 | 
Material in cylinder: 
 | 
|     •  | Inspect cylinder for damaged components and/or foreign materials. |  
  
|     •  | Repair or replace as required. |  
  
 | 
Seized crankshaft or connecting rod bearings 
 | 
|     •  | Inspect crankshaft and connecting rod bearings. |  
  
 | 
Bent or broken connecting rod 
 | 
|     •  | Inspect connecting rods. |  
  
 | 
Broken crankshaft 
 | 
 |