Automobile engine overhaul package usually includes the following contents:

1. Crankshaft grinding or replacement: grind the engine crankshaft to restore its surface smoothness, or replace it with a brand-new crankshaft.

2. Replacement of piston assembly: Replace piston assembly such as piston, piston ring and piston pin to ensure the tightness and smooth operation between piston and cylinder wall.

3. Grinding or renovation of cylinder block: grinding the engine cylinder block to repair the worn or uneven surface, or renovating it.

4. Replacement of crankshaft bearing: Replace crankshaft bearing to ensure the stability and lubricity of crankshaft when the engine is running.

5. Water pump replacement: replace the engine water pump to ensure the normal operation of the engine cooling system.

6. Oil seal replacement: replace the oil seals in all parts of the engine to prevent leakage of lubricating oil or coolant.

7. Valve grinding or replacement: grind the engine valve to ensure the sealing between the valve and the cylinder, or replace it with a brand-new valve.

8. Crankcase seal replacement: replace the crankcase seal to prevent engine oil leakage.

9. Fuel injection system overhaul: overhaul and adjust the engine fuel injection system to ensure the normal operation of the fuel injection system.

Engine overhaul package is usually a comprehensive overhaul and maintenance of the engine to restore its performance and reliability. The contents of overhaul package for different vehicle models and engine types may be different, and the specific contents can be adjusted according to the actual situation and maintenance needs of the vehicle.