One of the simplest tests for checking the condition of the engine is the cylinder leakage test. Compression leakage can show damaged valves, worn rings, blown head gasgets or a cracked cylinder head. The extra long adaptor makes this especially suitable for Ford Zetec and General Motors Ecotec engines. Dual gauged Leak Detection Unit 3/16” Flexi Hose (200psi) 14mm and 18mm Adaptors Fixed short connector M14 x 25mm Fixed long connector M14 x 220mm