Actron Fuel Pump Diagnostic Kit with Auto Analyzer is designed to help detect a defective fuel pump is defective and can help diagnose fuel-system related performance problems. The auto analyzer performs all standard electrical tests for on-car and bench troubleshooting. Locate faulty wiring, test electrical components, engine sensors, ignition and fuel systems and starting or charging system voltage. Pinpoint problem area and determine which components need repair or replacement. The fuel pressure tester is compatible with all makes and models with schrader valve test port on the fuel rail, all Asian, European and domestic makes with "banjo bolt" connection the most popular, 12mm x 1.25 banjo included, 12mm x 1.5 and 8mm x 1.0, all makes and models with detachable rubber hose connection at fuel rail, fuel line or fuel filter, and GM TBI with threaded connection at fuel filter or throttle body. The fuel pump tester features a 40-inch gauge hose for ease of reaching any test point, 2-1/2 inch gauge with 0-100 psi or 0-700 kPa scales for accurate measurements, and pressure relief button and 6-feet hose for safely disposing of gasoline and repeating tests without disconnecting the gauge. The auto analyzer features backlit LCD is easy to read day or night, hold button retains display data, automatic polarity sensing to avoid reversed test lead hook-up, automatic zero adjustment for volts, amps and battery tests for accurate measurements, low battery indication for user convenience, fold-out stand for better viewing position color coded detachable test leads, and alligator clips included for hands-free test lead connections. We have included a comprehensive user manual with illustrated step-by-step automotive test procedures and examples in english, spanish, and french. The auto analyzer requires a 9 volt battery which is not included.