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What is the method for measuring cylinder pressure?

1 Answers

VonConnor

07/29/25 3:37pm

Cylinder compression pressure measurement methods are as follows: 1. Using a cylinder pressure gauge. The measurement steps are as follows: (1) Ensure the engine operates normally until the coolant temperature reaches above 75°C. (2) Insert the rubber adapter of the cylinder pressure gauge into the spark plug hole of the cylinder being tested, ensuring it is properly aligned and tightly secured. (3) Fully open the throttle and choke valves, then use the starter to rotate the crankshaft for 3-5 seconds (no fewer than four compression strokes). Stop rotating once the pressure gauge pointer indicates and maintains the maximum pressure. (4) Remove the cylinder pressure gauge, record the reading, and press the one-way valve to reset the pressure gauge pointer to zero. Measure each cylinder in sequence using the above method, with each cylinder measured at least twice. 2. Using a cylinder pressure tester. (1) Measure with a pressure sensor-type cylinder pressure tester. (2) Measure with a starter current or starter voltage drop-type cylinder pressure tester. (3) Measure with an inductive discharge-type cylinder pressure tester.

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