Fuel Pressure: Testing and Inspection
Fuel PressureINSPECTION
CAUTION:
^ Before removing the fuel pressure gauge, release the fuel pressure.
^ Be careful not to spill fuel.
^ Catch the fuel from hoses using a container or cloth.
NOTE: If the fuel pressure is out of specification, check or replace the pressure regulator and pressure regulator vacuum hose.
1) Remove the collector cover.
2) Release the fuel pressure.
3) Open the fuel filler flap lid, and remove the fuel filler cap.
4) Disconnect the fuel delivery hose from fuel damper valve, and connect fuel pressure gauge.
5) Install the fuse of fuel pump to the main fuse box.
6) Start the engine.
7) Measure the fuel pressure while disconnecting pressure regulator vacuum hose from intake manifold.
Fuel pressure:
Standard: 284 - 314 kPa (2.9 - 3.2 kgf/cm�, 41 - 46 psi)
Fuel pressure:
8) After connecting the pressure regulator vacuum hose, measure the fuel pressure.
Fuel pressure:
Standard: 230 - 260 kPa (2.35 - 2.65 kgf/cm�, 33 - 38 psi)
Fuel pressure:
NOTE: The fuel pressure gauge registers 10 to 20 kPa (0.1 to 0.2 kgf/cm�, 1 to 3 psi) higher than standard values during high-altitude operations.