3mirrors Engine Air Valve Holder Kit used to pressurize the cylinder to keep the valve closed under the action of compressed air. Therefore, the oil seal of the valve can be replaced without disassembly.
When the cylinder is in the compression stroke. If the engine airtightness is not good enough, you can hear the sound of constant air leakage. Diagnose damaged parts by listening to the leak location.
Our Pressure Pipe M14+M18 Thread to 1/4 NPT with Ball Valve. The connector of this tool must be installed in the position of the spark plug.
This kit can be used in gasoline engines, such as cars, trucks, ships, motorcycles, ATVs, etc. Not for use in diesel engine vehicles.