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Home >> American Motors >> 1987 >> GTA 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> TBI System >> Adjustments >> Fuel Pressure Regulator

Fuel Pressure Regulator

  1. Adjustment of the fuel pressure regulator is necessary to establish the correct pressure after a replacement has been installed. Remove the air cleaner assembly or air inlet horn.
  2. Connect a tachometer to the diagnostic connector terminals D1-1 and D1-3. Some vehicles do not have a pressure test fitting on the throttle body. Pressure Test Fitting (8983 501 572) can be used instead.
  3. Connect an accurate fuel pressure gauge to the fuel body pressure test fitting. Start engine and accelerate to a speed of about 2000 RPM.
    CAUTION: Use extreme caution when the engine is operating. DO NOT stand in a direct line with the fan. DO NOT put your hands near the pulleys, belts or fan. DO NOT wear loose clothing that can get caught in the engine.
  4. Turn Torx head adjustment screw in the bottom of the regulator to obtain 14.5 psi (.10 kg/cm2 ) of pressure on 1.4L and 2.0L engines and 17.4 psi (.12 kg/cm2 ) on 1.7L engines.
  5. Install a lead seal ball to cover regulator adjustment screw after adjusting pressure to specification. Remove all test equipment. Reinstall air cleaner assembly or air inlet horn.
TBI OPERATING FUEL PRESSURE

Engine psi (kg/cm2 )
1.4L 14.5 (1.0)
1.7L 17.4 (1.2)
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