Diagnosing poor engine performance, starting issues, or excessive oil consumption means nothing without accurate compression data. The Sealey VSE3155 Master Compression Test Kit gives technicians a reliable, all-in-one solution for testing compression on both petrol and diesel engines across a vast range of vehicles. At the heart of the kit is a 600psi gauge with a large rubber bumper for protection, paired with straight and right-angled quick connect fittings for flexible access in tight engine bays. An extensive selection of adaptors covers spark plug sizes of 10mm, 12mm, 14mm, and 18mm, glow plug adaptors for a wide range of manufacturers including Alfa Romeo, BMW, Citroen, Fiat, Ford, Honda, Land Rover, Mercedes, Nissan, Peugeot, Renault, Toyota, VAG, Vauxhall/Opel, Volvo, and many more, plus injector adaptors in M20, M22, and M24 threads along with Ford Stanadyne and clamp-on injector types. Coverage extends to modern cars, vans, trucks, buses, agricultural, and marine engines. Th