T100 SR5 Extra Cab Pickup 4WD V6-3.4L (5VZ-FE) (1998)
Fuel Pressure: Testing and Inspection
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 6 bolts, and disconnect the No.2 timing belt cover.
(d) Remove the union bolt holding the fuel pipe to the delivery pipe and gasket.
CAUTION: Put a shop towel under the delivery pipe.Slowly loosen the union bolt.
(e) Install SST (pressure gauge) to the delivery pipe with the 2 gaskets and SST (union and union bolt).
SST O9268-45012
Torque:34.3 N.m (350 kgf.cm, 25 ft.lbf)
(f) Wipe off any splattered gasoline.
(g) Connect the TOYOTA hand-held tester to the DLC3. (See on-vehicle inspection in fuel pump)
(h) Reconnect the negative (-) terminal cable to the battery.
(i) Turn the ignition switch ON.
(j) 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:
-
Fuel hoses and connections
-
Fuel pump
-
Fuel filter
-
Fuel pressure regulator
(k) Disconnect the TOYOTA hand-held tester from the DLC3.
(l) Reinstall the No.2 timing belt cover with the 6 bolts.
(m)Start the engine.