JIFETOR Fuel Injector Pump Pressure Gauge Kit1x 3-1/2" Large Dial Pressure Gauge1x 15"L Long Hose with Drain hose1x 8"L Short Hose13x Adapters1x Aluminum Tee & Brass Fittings2x Cut Hoses2x Hose Clamps1x Instruction1x Red Blow Molding Case 15"L x 11"W x 3"HAPPLICATION RANGE1. Fuel injection pressure is less than 140PSI: perfect for most gasoline/gas engine fuel injection system (except for Bosch, CIS Jetronic, Throttle Body Systems on GM vehicles), not for diesel high pressure injection pump or direct-injection engine.2. Check if your vehicle's fuel pressure can be tested by one of following connection styles:Hook up fuel pressure test port directly14"L long hose brass fittings is used for the 1/4" SAE standard schrader valve on the fuel rail or fuel pump. The 8"L short hose for M6 fuel pressure test port, and M8/M10/M12/M14 adapters for the corresponding test port on fuel railIn-line connectionAluminum tee with brass fittings allows to test the fuel pressure for most vehicles, by splicing in-line between the fuel pump and engineNOTE1.Please wear gloves and goggles when use2.Use by professional or under the guidance of a professional3.Always refer to equipment manufacturer's operation instruction and recommended readings4.Testing fuel pressure is an essential part of the troubleshooting process of fuel injection system. Proper fuel pressure is vital for engine operation and performance5.Before making connections and testing, place a dry chemical (Class B) fire extinguisher nearby.6.Gasoline is highly flammable. Do not smoke, or test near open flames or a source of electrical sparks, or hot manifolds or other engine components.7.Perform service in a well-ventilated, outdoor location8.Make sure all connections are tight to avoid fuel leaks. Or use PTFE tape if needed.