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Home >> Subaru >> 1987 >> Justy GL >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Pump - Electric >> Testing >> Pressure Test >> Fuel Injected Models
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Fuel Injected Models

  1. Unplug the fuel pump electrical connector. Crank engine for 5 seconds to relieve fuel system pressure. Disconnect fuel hose at the fuel pressure regulator. Install a fuel pressure gauge in-line using a "T" fitting.
  2. Fuel pressure at idle speed should be 26-30 psi (1.8-2.1 kg/cm2 ). Increase RPM and ensure fuel pressure increases correspondingly.