T100 Regular Cab Pickup 2WD L4-2693cc 2.7L DOHC MFI (1998)
Fuel Pressure: Testing and Inspection
INSPECTION
CHECK FUEL PRESSURE
(a) Check that the battery voltage is above 12 volts.
(b) Disconnect the negative (-) terminal cable from the battery.
(c) Remove the union bolt and 2 gaskets, and disconnect the fuel inlet pipe from the delivery pipe.
HINT:
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Put a suitable container or shop rag under the delivery pipe.
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Slowly loosen the union bolt.
(d) Install the fuel inlet pipe and SST (pressure gauge) to the delivery pipe with 3 gaskets and SST (union bolt).
SST 09268-45012
Torque:29 N.m (300 kgf.cm, 22 ft.lbf)
(e) Wipe off any splattered gasoline.
(f) Connect the TOYOTA hand-held tester to the DLC3.
(g) Turn the ignition switch ON and TOYOTA hand-held tester main switch ON.
NOTICE: Do not start the engine.
(h) Select the active test mode on the TOYOTA hand-held tester.
(i) Please refer to the TOYOTA hand-held tester operator's manual for further details.
(i) If you have no TOYOTA hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.
(k) Reconnect the negative (-) terminal cable to the battery.
(i) Turn the ignition switch ON. a
(m)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
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Injectors
(n) Remove the TOYOTA hand-held tester.
(o) Start the engine.