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Pressure Test: Electrical

NOTE: The following is only a general procedure. For specific manufacturer's electric fuel pump testing procedures, see appropriate FUEL INJECTION article in this section.
  1. Most vehicles use a fitting to allow pressure test without separating fuel lines. If not, separate fuel line from injector inlet "T". Install a "T" connector with a pressure gauge in the line and reconnect line to injector.
  2. Hold pressure gauge about 16" above fuel pump. Start engine and observe pressure.
  3. After pressure check, reconnect steel line. If pressure is not within specifications or varies greatly, replace fuel pump.