Injection Inspection

INJECTORS INSPECTION





1. INSPECT INJECTOR INJECTION

CAUTION: Keep injector away from sparks during the test.





(a) Remove the union bolt and 2 gaskets. and disconnect the fuel inlet hose from the fuel filter outlet.





(b) Connect SST (union and hose) to the fuel filter outlet with 2 gaskets and the union bolt. SST 09268-41045 (90405-09015)

Torque: 30 N.m (300 kgf.cm, 22 ft.lbf)

(c) Remove the pressure regulator from the delivery pipe.
(d) Install a O-ring to the fuel inlet of pressure regulator.





(e) Connect SST (hose) to the fuel inlet of the pressure regulator with SST (union) and the 2 bolts. SST 09268-41045 (09268-41090)

Torque: 9.3 N.m (95 kgf.cm, 82 in.lbf)

(f) Connect the fuel return hose to the fuel outlet of the pressure regulator.
(g) Install the grommet and a O-ring to the injector.





(h) Connect SST (union and hose) to the injector, and hold the injector and union with SST (clamp). SST 09268-41045
(i) Put the injector into the graduated cylinder.

HINT: Install a suitable vinyl hose onto the injector to prevent gasoline from splashing out.





(j) Connect the TOYOTA hand-held tester to the DLC3.
(k) Turn the ignition switch ON and TOYOTA hand-held tester main switch ON.

NOTICE: Do not start the engine.

(l) Select the active test mode on the TOYOTA hand-held tester.
(m) Please refer to the TOYOTA hand-held tester operator's manual for further details.
(n) If you have no TOYOTA hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector. (o) Reconnect the negative (-) terminal cable to the a battery.
(p) Turn the ignition switch ON.

NOTICE: Do not start the engine.





(q) Connect SST (wire) to the injector and battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test each injector 2 or 3 times. SST 09842-30070

Volume: 39 - 49 cu.cm (2.3 - 3.0 cu. in.) per 15 sec.

Difference between each injector:
5 cu.cm(0.3 cu in.) or less

If the injection volume is not as specified, replace the injector.





2. INSPECT LEAKAGE
(a) In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leakage from the injector. SST 09842-30070

Fuel drop: One drop or less per minute

(b) Turn the ignition switch OFF.
(c) Disconnect the negative (-) terminal cable from the battery.
(d) Remove the SST and TOYOTA hand-held tester. SST 09268-41045
(e) Reinstall the fuel inlet hose to the fuel filter outlet with 2 new gaskets and the union bolt.

Torque: 30 N.m (300 kgf.cm, 22 ft.lbf)