Protege LX L4-1489cc 1.5L DOHC MFI (1998)
Fuel Pressure: Testing and Inspection
Fuel Pressure Hold Inspection
FUEL PRESSURE HOLD INSPECTION
WARNING:Fuel line spills and leaks are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin
and eyes. To prevent this, always complete the "Fuel Line Safety Procedures".
1. Disconnect the negative battery cable.
2. Connect a fuel pressure gauge between the fuel filter (high-pressure side) and fuel distributor.
3. Connect the negative battery cable.
4. Connect data link connector terminals F/P and GND by using a jumper wire.
5. Turn the ignition switch to ON for approximately 10 sec. to operate the fuel pump.
6. Turn off the ignition switch. Wait for 5 minutes, and measure the fuel pressure.
Specification: More than 150 kPa (1.5 kgf/sq.cm, 21 psi)
7. Disconnect the jumper wire.
8. If the pressure is lower than specified, measure the fuel line pressure with pinching the return hose.
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If the fuel line pressure holds, replace the pressure regulator.
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If the fuel line pressure does not hold, check the fuel pump fuel hold pressure.(refer to FUEL PUMP, TESTING AND INSPECTION).
If the fuel pump fuel hold pressure is normal, check the fuel leaks from fuel line and fuel injector.
