Dio50 generally has several cylinder pressures.

It's an electric car without cylinder pressure.

Cylinder pressure is the pressure in the cylinder when the piston compresses and does work. Check with cylinder pressure gauge. If there is no cylinder pressure, the engine needs to be disassembled for maintenance.

How to repair when the cylinder pressure is insufficient: ensure that the battery is fully charged, so that the engine can work at normal temperature', step on the clutch to cut off the oil and turn off the fire (cut off the ignition coil plug and the injector plug), fully open the throttle valve, connect the cylinder pressure gauge to the spark plug seat hole, remove all the spark plugs, read the cylinder pressure indication value, and use the starter to rotate the engine crankshaft for 3-5S (speed 130-250r /min).