Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool with M12 or M14 Thread

Product Description Specification: Material: Brass, Rubber Engine connection port: Spark plug hole 12mm and 14mm; Compressed air inlet: 1/4" quick coupler male plug; Hose working pressure 30psi≤P≤1000psi Total length: 17in.

Installation and Connection Working principle 1: To assist in holding valves closed with compressed air, the cylinder is pressurized by the air compressor pump. This allows for the replacement of the valve oil seal without the need for dismantling. Working principle 2: During the compression stroke of the cylinder, all valves are closed. By pressurizing the cylinder with compressed air, any air leakage due to poor engine tightness can be detected. Damaged parts can be diagnosed by locating the source of the leak.

Engine Air Valve Holder Fits both M12 and M14 Thread Spark Plug

Add to Cart 4.2 out of 5 stars 443 Customer Reviews Price: $17.95 Thread: M12+M14 Max air pressure: 1000psi Main Usage 1: Pressurizes the cylinder to assist in holding valves closed with compressed air. This allows for the replacement of the valve oil seal without disassembly. Main Usage 2: During the compression stroke of the cylinder, if air leakage is detected due to poor engine tightness, damaged parts can be diagnosed by locating the leak. Compatibility: Suitable for gasoline engines with M12 or M14 spark plugs. The tool joint must be installed in the spark plug position. Working requirements: Requires compressed air (working pressure 30psi≤P≤1000psi), with an air inlet of 1/4" quick coupler male plug. High-pressure resistance: Upgraded with improved materials (2024) and a steel wire-braided hose, with a maximum compressive strength of 1000PSI.

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