Celica GT Liftback L4-2164cc 2.2L DOHC (5S-FE) MFI (1999)
Fuel Pressure: Testing and Inspection
CHECK FUEL PRESSURE
a. Check the battery positive voltage is above 12 V.
b. Disconnect the negative (-) terminal cable from the battery.
c. Remove the union bolt and 2 gaskets, and disconnect the fuel inlet hose from the fuel filter outlet.
CAUTION:
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Put a shop towel under the fuel filter.
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Slowly loosen the union bolt.
d. Install the fuel inlet hose and SST (pressure gauge) to the fuel filter outlet with the 3 gaskets and SST (union bolt).
SST 09268-45012 (09268-41190, 90405-06167)
Torque: 29 Nm (300 kgf.cm, 22 ft.lbf)
e. Wipe off any splattered gasoline.
f.
Reconnect the negative (-) terminal cable to the battery.
g. Connect the TOYOTA hand-held tester to the DLC3. (See step 1 in check fuel pump operation (a) to (f))
h. Turn the ignition switch ON.
i.
Measure the fuel pressure.
Fuel pressure: 265-304 kPa (2.7-3.1 kgf/Sq.cm, 38-44 psi)
If pressure is high, replace the fuel pressure regulator. If pressure is low, check these parts;
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Fuel hoses and connections
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Fuel pump
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Fuel filter
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Fuel pressure regulator
j.
Disconnect the TOYOTA hand-held tester from the DLC3.
k. Reinstall the fuse cover on the instrument panel.
l.
Start the engine.
m. Measure the fuel pressure at idle.
Fuel pressure: 226 - 265 kPa (2.3 - 2.7 kgf/sq.cm, 33 - 38 psi)
n. Stop the engine.
o. Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.
Fuel pressure: 147 kPa (1.5 kgf/sq.cm, 21 psi) or more