Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool(Pressure Resistance of 1000PSI) M14+M18 Thread for Ford GM Trucks LS1/LS2/LS3/4.8/5.3/6.1L

Main Usage 1: Pressurizes the cylinder to help hold valves closed with compressed air. So The oil seal of the valve can be replaced without dismantling;
Main Usage 2: When the cylinder is in the compression stroke. If the air tightness of the engine is not good enough, you can hear the continuous leakage of air. Diagnosis of damaged parts by listening to the leak position;
Compatibility: Suitable for the gasoline engine with M14 or M18 spark plug. The joint of this tool must be installed on the position of the spark plug;
Working requirements: Compressed air (working pressure 30psi≤P≤1000psi), Air inlet: 1/4" quick coupler male plug;
Widely use: 14mm is the standard spark plug size for most gasoline engine, such as car, truck, boat, motorcycle, ATV, etc. Not for use in diesel engine vehicles.
Anti high pressure: Upgraded products using improved materials, Steel wire braided hose, Maximum compressive strength of 1000PSI.

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