What are the methods for detecting cylinder compression pressure?
1 Answers
Cylinder compression pressure can be detected using the following methods: 1. Using a cylinder pressure gauge. The detection steps are as follows: (1) Ensure the engine operates normally until the water temperature reaches above 75°C. (2) After stopping the engine, remove the air filter, use compressed air to clean the dust and dirt around the spark plugs or fuel injectors, then remove all spark plugs or fuel injectors and place them in order according to the cylinder sequence. (3) 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. (4) Fully open the throttle and choke valves, and use the starter to rotate the crankshaft for 3-5 seconds (no less than four compression strokes). Stop rotating once the pressure gauge pointer indicates and maintains the maximum pressure. (5) 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 no less than twice. 2. Using a cylinder pressure tester. (1) Detection with a pressure sensor-type cylinder pressure tester. (2) Detection with a starter current or starter voltage drop-type cylinder pressure tester. (3) Detection with an inductive discharge-type cylinder pressure tester.
