Sephia Sedan L4-1.6L (1996)
Fuel Pressure: Testing and Inspection
Fuel Line Pressure Inspection
Fuel Line Pressure Inspection
WARNING: Before performing the following operation, release the fuel pressure from the fuel system to reduce the possibility of injury or fire.
See: Fuel Filter/Fuel Pressure Release
1. Disconnect the negative battery cable.
2. Install a fuel pressure gauge between the filter and the fuel main hose. Install clamps as shown in figure.
3. Connect the negative battery cable.
4. Connect the data link connector (DLC) terminals F/P and GND with a jumper wire.
5. Turn the ignition switch ON.
6. Measure the fuel line pressure.
Fuel line pressure: 38-46 psi (265-314 kPa)
Pressure low - Measure fuel pump maximum pressure. If as specified, fuel line or fuel filter might be clogged or restricted.
Pressure high - Replace pressure regulator.
