How to judge and calculate the pressure difference of each cylinder of the engine

gas pressure technical standards:
CA6102:934KPaEQ6100 is not less than 834KPa, and the service limit is 670KPa. The fourth cylinder does not meet the conditions, you should check and calculate the average of the two measurements of each cylinder: then calculate the average pressure of the six cylinders.
Calculate whether the pressure difference of each cylinder exceeds 6% of the average value
The maximum value of the average is: 802.5x(1+5%)= 842.625Kp8 the minimum value of the average is: 8025x(1-5%)= 762.375Kpa
If the average value of the measurement is between (762.375-842625)Kpa, the requirement is met. The fourth cylinder is less than the average value and should be checked.
Measuring cylinder pressure is a simple and scientific way to diagnose engine faults. The correct use of cylinder pressure measurement methods can accurately and quickly diagnose some common engine failures, especially the methods that drivers and maintenance personnel should master.
The car should start smoothly when the ambient temperature is not lower than -5 ℃, and it is allowed to start no more than 3 times, and each start should not exceed 5 seconds. Check whether there are more than three times or more than 5 seconds of start failure. The hot car starts the engine. Under normal operating temperature, it can be started within 5 seconds. If it does not meet the requirements, the vacuum degree is unqualified. When the gasoline engine is idling, the vacuum of the intake manifold should be in the range of 57-70kPa. (The plane shall prevail) does not meet the requirements for the vacuum fluctuation range is unqualified. Intake manifold vacuum fluctuates when engine is running
The six-cylinder gasoline engine does not exceed 3kPa, and the Sijiang gasoline engine does not exceed 5kPa. Check atmospheric pressure against sea level using tachometer and vacuum gauge.
Standard) does not meet the requirements is the cylinder pressure value is unqualified. The compression pressure of the cylinder shall meet the original design requirements. Use tachometer. The cylinder pressure gauge inspection does not meet the requirements. The differential pressure per cylinder is the difference between the pressure per cylinder and the average pressure per cylinder. Not more than 89, diesel engine not more than 10% use tachometer, cylinder pressure gauge or engine comprehensive analyzer measurement does not meet the requirements for unqualified