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The built-in one-way valve with pressure holding function ensures that the pressure gauge obtains the maximum pressure at the spark plug during the compression process. Motors drive the engine to rotate at 100-150R/MIN speeds for 3-5 seconds.

11PCS Petrol Engine Cylinder Pressure Tester With Multiple Scales 0-20 Bar Kit. The built-in one-way valve with pressure holding function ensures that the pressure gauge obtains the maximum pressure at the spark plug during the compression process.

The built-in one-way valve with pressure holding function ensures that the pressure gauge obtains the maximum pressure at the spark plug during the compression process. 【Application 】: Gasoline engine cylinder --- equipped with different sizes of rotating and push-in adapters, widely used in most types of gasoline gasoline gas engine cylinders and deep spark plugs, common in motorcycles, lawn mowers, cars, trucks, ATV and many more.

The built-in one-way valve with pressure holding function ensures that the pressure gauge obtains the maximum pressure at the spark plug during the compression process. Motors drive the engine to rotate at 100-150R/MIN speeds for 3-5 seconds.