FUEL INJECTION PRESSURE TESTER KIT

This Fuel Injection Pressure Tester Kit is designed to perform fuel pressure tests on most domestic and imported cars and trucks that are equipped with electronic fuel injection systems. The tester saves you money by helping you test and troubleshoot fuel system problems that can affect your vehicle's performance and fuel economy.

You must consult the manufacturer's service manual for your vehicle BEFORE performing any test procedures. Contact your local car dealership, auto parts store, bookstore, or public library for availability of these manuals. The following companies publish valuable repair manuals, including material that covers fuel injection systems and testing techniques.

There are two basic types of electronic fuel injection systems used in today's automobiles: Throttle Body Injection (TBI) (see Figure 1) and Multi-port or Multipoint injection (MFI) (see Figure 2). The tests outlined in this manual are for testing fuel system pressures on these type of systems. On most vehicles, two basic tests are performed when checking fuel system pressure: "key on engine off" (engine not running) test and "key on engine on" (engine running) test. Unless otherwise noted by the vehicle’s manufacturer, engine running tests are performed with the engine at idle.

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