What's wrong with the knocking sound inside the engine? Please follow the article to service your forklift.

Reason 1: The ignition time is too early

Troubleshooting method: overhaul the water pump or adjust the tension of the fan belt

Reason 6: The piston pin is too loose
Troubleshooting method: Replacing the piston pin or bushing

Reason 7: Excessive wear on pistons, piston rings, cylinder liners
Troubleshooting method: overhaul and replace

Reason 8: Excessive valve clearance
Troubleshooting method: Adjustment

Reason 9: Excessive wear of BEARING SET，CONNETING ROD and BEARING SET,CRANKSHAFT
Troubleshooting method: Replace or repair bearing bushes

Reason 10: Excessive wear on the timing gear
Troubleshooting method: replace

Reason 11: Too much clearance between valve stem and valve guide
Troubleshooting method: Replace guide tube after valve stem chrome repair

Reason 12: The position of the air manifold preheat valve is incorrect
Troubleshooting method: Adjust by season

Reason 13: Fuel specification mismatch
Troubleshooting method: switch to gasoline of the same specification