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Pressure gauge for cylinder: used to measure cylinder pressure. When measuring, remove spark plug first, screw instrument pipe orifice into the position of spark plug, use starter to drag the engine to rotate, and then fetch the maximum reading of the pressure gauge for cylinder as cylinder pressure of this cylinder.
Chapter Four Measurement of Cylinder Pressure I. Detection of Cylinder Pressure Measurement of cylinder pressure is the major index for judgment of engine working condition, through which, we can definitely judge if a certain system of engine works well. Therefore, during maintenance of engine, measurement of cylinder pressure is indispensable. 1. Measuring process
1.1 Turn off ignition switch, pull out all ignition cables from spark plug side, and then pull out harness connector of injection nozzle.
1.2 Use a spark plug sleeve to loosen the spark plug whose cylinder will be measured. Explanation: do not remove the spark plug whose cylinder will not be measured.
Please select a cylinder pressure gauge with accurate reading and let its pointer return to zero; otherwise, it may affect accuracy of reading. |