TU-21 Engine Cylinder Leak Down Tester Kit, Automotive Engine Compression Lea…
TU-21 Engine Cylinder Leak Down Tester Kit, Automotive Engine Compression Leakage Kit for Cars Trucks Motorcycles Black. Engine Cylinder Leak Down Tester is a useful tool that hooks up to an air compressor (prepared by yourself) and can assist in detecting common engine faults like worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets.