Diagnosing poor engine performance, difficult starting or excessive smoke on a diesel engine often points to a compression problem, but without the right equipment an accurate test is impossible. The Sealey VSE204 Diesel Engine Compression Test Kit gives you a comprehensive solution for testing compression on cars and light commercial vehicles with direct or indirect injection. The kit features a 60mm gauge with a heavy-duty rubber bumper, 400mm of hose and a quick connector, along with a pressure relief valve that allows repeated on-vehicle tests without removing the kit between readings. A 90-degree coupling adaptor is included for applications where access is limited. The kit covers a wide range of vehicles including Audi, Citroen, Ford, Land Rover, Mercedes, Renault, Toyota, Vauxhall/Opel, VW and many more, with adaptor threads including M10 x 1.25, M12 x 1.25, M14 x 1.25 and M18 x 1.5, plus dummy injectors for Stanadyne and M24 x 2 fitments. Everything is supplied in a storage cas