Paseo Coupe L4-1497cc 1.5L DOHC MFI (1997)
Fuel Pressure: Testing and Inspection
CHECK FUEL PRESSURE
(a) Check the battery positive voltage is above 11 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 union bolt. SST 09268-45012
Torque: 29.5 N.m (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.
(h) Turn the ignition switch ON.
(i) Measure the fuel pressure.
Fuel pressure: 301 - 347 kPa
(3.1 - 3.5 kgf/sq.cm, 44 - 50 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check these parts:
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Fuel pump
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Fuel filter
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Fuel pressure regulator
(j) Remove the TOYOTA hand-held tester from the DLC3.
(k) Reinstall the fuse cover on instrument panel.
(l) Start the engine.
(m)Measure the fuel pressure at idle.
Fuel pressure: 301 - 347 kPa
(3.1 - 3.5 kgf/sq.cm, 44 - 50 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