Impreza WRX STI F4-2.5L DOHC Turbo (2007)
Fuel Pressure: Specifications
Fuel Pressure
Measure the fuel pressure while disconnecting pressure regulator vacuum hose from intake manifold.
Fuel pressure:
Standard ........................................................................................................................................ 284 - 314 kPa (2.9 - 3.2 kgf/cm2, 41 - 46 psi)
After connecting the pressure regulator vacuum hose, measure the fuel pressure.
Fuel pressure:
Standard .................................................................................................................................... 230 - 260 kPa (2.35 - 2.65 kgf/cm2, 33 - 38 psi)
The fuel pressure gauge registers 10 - 20 kPa (0.1 - 0.2 kgf/cm2, 1 - 3 psi) higher than standard values during high-altitude operations.
