How does Yamaha Tianjian King 250 check the cylinder pressure?

1. Warm up the car first, let the engine run to normal temperature, keep the temperature of coolant at 85-95 degrees, remove all spark plugs or fuel injectors on the car, and ground the high-voltage line.

2. Secondly, when stepping on the accelerator, the throttle valve is fully opened and the threaded pipe joint is screwed on the spark plug hole.

3. Finally, the starter starts Yamaha Heavenly Sword King 250 for two seconds. After the pointer is determined, read the pressure value, press the check valve button to exhaust and decompress, and return to the pointer.