The Lang Tools Master Global Fuel Injection Test Kit (TU-550) is an essential diagnostic instrument for automotive technicians and mechanics, designed to accurately test and troubleshoot fuel injection systems. This comprehensive kit provides the necessary tools to measure fuel pressure, identify leaks, and diagnose various fuel delivery issues across a broad spectrum of vehicles. Its thoughtful design, including enhanced gauge protection and expanded hose compatibility, makes it a reliable choice for professional automotive service. KEY FEATURES AND BENEFITS: Extensive compatibility: Works with most domestic and foreign vehicle platforms from 1988 to present (excluding CIS and TBI systems). Detachable gauge assembly: Allows for safer storage and enhanced gauge protection, featuring a neoprene boot. Versatile fuel line tee: Redesigned 71317 model supports 1/4", 5/16", and 3/8" hose sizes. Organized storage: Includes a durable blow-molded case with labeled compartments for easy tool selection. SPECIFICATIONS: Included Components: Five banjo bolt test adapters: M14 x 1.50, M12 x 1.50, M12 x 1.25, M10 x 1.00, M8 x 1.00 Fuel pump deadhead pressure test adapter with 1/4", 5/16", and 3/8" hose sizes M6 x 1.00 Honda test port adapter Longer test hose adapters for Ford, Toyota/Geo, and Audi/VW 5/16" and 3/8" quick connect tube form adapters (Chrysler, GM, Toyota) Standard and small Schrader adapters (short hose and right-angle configurations) Specific O-ring adapters and bolts for Hyundai, Mitsubishi (16mm), Nissan, and Infiniti (11mm) M12 x 1.00 Honda pulse damper adapter (Accord, Civic, S2000) Seal repair parts kit Four hose clamps Two pieces of 3/8" inverted flare tubes with two 5/8 - 18 tube nuts Blow-molded storage case with adapter guidebook Test Gauge Assembly (M91) Gauge Specifications: Type: Dual-range Measurement Units: 0-7 bar / 0-100 psi Diameter: 2.5 inches HOW TO USE: Safety First: Ensure the vehicle engine is off and cool. Relieve any residual fuel pressure from the system according to the vehicle manufacturer's service manual to prevent fuel spray. Wear appropriate personal protective equipment, including safety glasses. Identify Test Point: Locate the appropriate fuel pressure test port or point in the fuel system as specified by the vehicle service manual. This is often a Schrader valve or a point where a fuel line can be safely interrupted. Select Adapter: Consult the kit's adapter guidebook and select the correct adapter(s) for the vehicle's specific fuel system connection. The kit includes various banjo bolts, quick connects, Schrader, and specialized adapters. Connect Gauge: Attach the chosen adapter(s) to the fuel system test point. Connect the main test hose and valve assembly to the adapter, ensuring a secure, leak-free connection. Then, connect the test gauge assembly (M91) to the test hose. Perform Test: Following the vehicle manufacturer's diagnostic procedures, start the engine (if required for the test) or cycle the ignition to pressurize the fuel system. Observe the fuel pressure reading on the gauge. Interpret Results: Compare the observed fuel pressure reading to the vehicle manufacturer's specifications. Deviations from the specified range can indicate issues such as a weak fuel pump, clogged fuel filter, restricted fuel lines, faulty fuel pressure regulator, or leaking injectors. Relieve Pressure & Disconnect: After the test, carefully relieve fuel pressure from the system using the kit's relief valve or following vehicle-specific procedures. Once pressure is relieved, disconnect the gauge and adapters. Clean & Store: Clean any spilled fuel promptly. Store all components back in the labeled compartments of the blow-molded case for future use. BENEFITS OF USING LANG TOOLS MASTER GLOBAL FUEL INJECTION TEST KIT (TU-550): Precise diagnostics: Enables accurate identification of fuel system faults for better repair accuracy. Broad compatibility: Supports a wide range of vehicle makes and models, minimizing the need for multiple kits. Enhanced usability: Features such as detachable gauge and organized case improve workflow and tool longevity. Cost-effective solution: Reduces diagnostic time and increases service quality and customer satisfaction. FEATURES: Compatible with most domestic and foreign vehicles from 1988 onward. Modular gauge assembly detaches for better storage and durability. Fuel line tee accommodates 1/4", 5/16", and 3/8" hose sizes for versatility. Includes essential banjo bolt adapters and specialized connectors. Supports deadhead pressure testing using multiple hose configurations. Includes vehicle-specific adapters for major brands like Honda, Toyota, Nissan, etc. Multiple Schrader valve types ensure wider application range. Heavy-duty blow-molded case keeps components protected and organized. Includes spare seals and consumables for long-term maintenance. Dual-range pressure gauge supports PSI and Bar measurements.