46pcs Diesel Petrol Engine Compression Tester Pressure Loss Leak Tester Master Kit Detail: Tests compression & leakage on both diesel & petrol vehicles Tests a wide range of modern engines including HDi, TDCi, Pumpe Duse (PD) & older diesel & petrol engines Accurately measures cylinder compression levels Twin gauge leak-back tester provides pressure & leak back percentages Includes an extensive range of petrol & diesel engine adaptors, including clamp-on and stanadyne injectors Ideal for most cars, trucks, buses, agricultural & marine engines Quick connect design increases efficiency & productivity .