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) Release the fuel pressure.
2) Open the fuel filler lid and remove the fuel filler cap.
3) Disconnect the fuel delivery hose from fuel damper, and connect fuel pressure gauge.
4) Start the engine.
5) Measure the fuel pressure while disconnecting pressure regulator vacuum hose from intake manifold.
NOTE:
The fuel pressure gauge registers 10 to 20 kPa (0.1 to 0.2 kgf/cm2, 1 to 3 psi) higher than standard values during high-altitude operations.
Fuel pressure:
Standard
284 - 314 kPa
(2.9 - 3.2 kgf/cm2, 41 - 46 psi)
6) After connecting the pressure regulator vacuum hose, measure the fuel pressure.
NOTE:
The fuel pressure gauge registers 10 to 20 kPa (0.1 to 0.2 kgf/cm2, 1 to 3 psi) higher than standard values during high-altitude operations.
Fuel pressure:
Standard
230 - 260 kPa
(2.35 - 2.65 kgf/cm2, 33 - 38 psi)