Sephia Sedan L4-1.6L (1996)
Fuel Pressure: Testing and Inspection
Fuel Pressure Hold Inspection
Fuel Pressure Hold 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 terminal.
2. Install a fuel pressure gauge between the fuel pipe and the fuel main hose. (Install clamps as illustrated.)
3. Connect the negative battery terminal.
4. Connect the data link connector (DLC) terminals F/P and GND with a jumper wire.
5. Turn the ignition switch ON for 10 seconds to operate the fuel pump.
6. Turn the ignition switch OFF and disconnect the jumper wire.
7. Observe the fuel pressure after 5 minutes.
Fuel pressure: More than 21 psi (147 kPa)
8. If not as specified, perform the following inspections.
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Fuel pump hold pressure.
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Pressure regulator hold pressure.
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Injector fuel leakage.
