What is the method for inspecting a cylinder?

1 Answers
AlexRose
07/29/25 7:21pm
The method for inspecting a cylinder is: 1. Measure the cylinder pressure by starting the engine and running it until it reaches normal operating temperature, then remove the air filter; 2. Clean the dirt around the spark plug, remove the spark plug, and ensure the throttle is fully open; 3. Insert the tapered rubber tip of a specialized cylinder pressure gauge into the spark plug hole of the cylinder being measured; 4. Measure the cylinder leakage by placing the intake and exhaust valves of the cylinder being tested at the top dead center position of the compression stroke while the engine is stationary, then use a cylinder leakage tester to check if the pressure reaches the specified value; 5. Throttle comparison method: when the engine is running, increase the throttle, and if a continuous knocking sound is heard from the crankcase, it indicates that the cylinder wall is scratched, causing gas to leak into the crankcase during compression and combustion.
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