Why is there too much oil coming out of the air filter after shutdown
1. Check valve leakage repair, replace damaged parts
2. Oil cut-off valve stuck: repair and clean, replace damaged parts
3. The intake valve cannot be closed tightly: maintenance of the intake valve
4. Electromagnetic valve malfunction: disassembly and repair
5. Minimum pressure valve malfunction: disassembly and repair
Check if the one-way valve is leaking or damaged, remove it for inspection, and replace it if necessary
