cause of issue:
1. Failure of the oil supply system
1. There is gas in the fuel system
Removal method: use the oil pump to remove the air in the system, and check the system for any leakage.
2. There is a blockage in the fuel system
Remedy: disassembly and cleaning
3. No oil supply or intermittent oil supply
Remedy: check and repair
4. Poor fuel injection of the fuel injection pump
Remedy: check the spray condition of the injector
5. The fuel advance angle is wrong
Remedy: Check the wear condition of the plunger of the fuel injection pump and the oil outlet valve and whether the spring of the oil outlet valve is broken.
6. The intake air damper is not opened or the oil cut-off handle is in the oil cut-off position
Remedy: Open the intake damper or place the fuel cut-off handle in the oil supply position.
2. Insufficient pressure
1. Bad piston wear
Remedy: replace the piston ring
2. Piston ring cement
Remedy: remove gel
3. Valve leakage
Remedy: The valve spring is broken or the elasticity is reduced, the valve clearance is improper, and the valve cone surface is not tightly sealed.
4. Low temperature at the end of compression
Remedy: Low outside temperature, take preheating and other methods to solve.
3. Failure of the electrical system
1. Insufficient battery power
Remedy: Recharge to meet specified requirements
2. Poor electrical wiring connection
Remedy: check whether the wiring is correct and reliable
3. Poor contact between the starter electromechanical brush and the commutator
Remedy: repair or replace the brush and clean the surface of the commutator with fine sandpaper to blow off the dust
4. Insufficient torque and slippage of the clutch plate of the starter
Remedy: add shims and adjust
5. The starter gear cannot be embedded in the flywheel ring gear Elimination method: find out the reason and deal with it
