What is the method for measuring cylinder pressure?

[ZoeyFitz]

Cylinder pressure measurement is performed as follows: 1. First, use compressed air to clean debris around the spark plugs; 2. Remove all spark plugs; 3. Insert the conical rubber tip of the dedicated cylinder pressure gauge into the spark plug hole of the cylinder being measured, ensuring it is properly aligned and tightly sealed; 4. Fully open the throttle valve and use the starter to rotate the crankshaft for 3 to 5 seconds until the pressure gauge needle indicates and maintains the maximum pressure reading, then stop rotation; 5. Remove the pressure gauge and record the reading. The cylinder's pressure capacity depends on the valves - if the valves cannot withstand the pressure, the cylinder's inherent pressure resistance becomes irrelevant.