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1.3 Screw the cylinder pressure gauge joint slowly and vertically into the spark plug hole. Do not screw too tightly for fear that it may be difficult to disassemble. 1.4 Step down clutch pedal, start the engine and let it run for about 5-6s, then fetch the numerical value.
2. Judgment of cylinder pressure value 2.1 Correct cylinder pressure The standard cylinder pressure value should be 10-13.5bar. With use of engine, this value will fall, but it should not be below 9bar with the pressure difference among cylinders not exceeding 3bar. 2.2 In case cylinder pressure of engine is below the standard value, it indicates deficiency of cylinder pressure, the main cause of which may be untight piston ring seal or valve. Please further analyze and check.
When starting the engine, ensure adequate quantity of electricity. Correct cylinder pressure can only be measured out with revolution of engine as 200-300r/min. |