moobody Auto Cylinder Leak Tester Compression Leakage Detector Kit Set Petrol Engine Gauge Tool Kit Double Gauge System with Case

Suitable for use on any petrol engine with 12mm or 14mm spark plugs to test the leakage of the cylinder. Judge the leakage according to comparing the normal cylinder pressure of the engine with the measured pressure during the test. 3"(75mm) diameter gauge with dual gauge system and gauge scale displays percentage of cylinder leakage and cylinder pressure. Pressurized air is supplied to each cylinder and in moments displays a rate of leakage measure from 0 to 100%. Dual gau