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Home >> Subaru >> 1990 >> Justy DL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel Pressure Check >> Fuel-Injected

Fuel Pressure Check: Fuel-Injected

  1. Disconnect fuel pump connector. Crank engine for at least 5 seconds. If engine starts, let it run until it stops. Disconnect fuel hose at pressure regulator and install fuel pressure gauge using "T" fitting.
  2. Start engine and check fuel pressure at idle. See the REGULATED FUEL PRESSURE  table. Ensure fuel pressure increases as engine RPM increases.
REGULATED FUEL PRESSURE

Application psi (kg/cm2 )
Justy 1.2L PFI 41.3 (2.9)