Does the car have no cylinder pressure? Is it related to the hydraulic bottom support?
The pressure of the cylinder is not at all. It doesn't matter to the hydraulic bottom. The valve is broken
There is no cylinder pressure for more reasons, the general cylinder internal cylinder sleeve, piston, piston ring and valve wear and timing, hydraulic systems, pressure relief, etc., need to be checked in order to confirm the cause of the failure
It has something to do with the tight seal of the cylinder, where the valve is hung or burned
