1991 LEXUS SC400 Service Repair Manual

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Page 1873 of 4087

LEXUS SC400 1991 Service Repair Manual EXHAUST SYSTEM NOTE: The specification descriptions ºUSA Spec.º and º Exc. USA Spec. º used in this section indicate the following specifications. USA Spec .: USA (50 States) Specifications. Exc.

Page 1874 of 4087

LEXUS SC400 1991 Service Repair Manual COMPONENTS EXHAUST PIPES AND HEAT INSULATORS EX±2± EXHAUST SYSTEM Exhaust Pipes and Heat Insulators WhereEverybodyKnowsYourName

Page 1875 of 4087

LEXUS SC400 1991 Service Repair Manual Injectors ON±VEHICLE INSPECTION INSPECT INJECTOR RESISTANCE(a) Remove the engine wire covers and throttle body.(See steps 1 to 8 and 13 on pages FI±27 to 30) (b) Disconnect the injector connecto

Page 1876 of 4087

LEXUS SC400 1991 Service Repair Manual COMPONENTS FOR REMOVAL AND INSTALLATION FI±49EFI SYSTEM ± Fuel System (Injectors) WhereEverybodyKnowsYourName

Page 1877 of 4087

LEXUS SC400 1991 Service Repair Manual REMOVAL OF INJECTORS (See Components on page FI±49) 1. REMOVE AIR INTAKE CHAMBER (See steps 1 to 16 on pages FI±27 to 32) 2. DISCONNECT FUEL INLET HOSE FROM LH DELIVERY PIPE Remove the pulsation

Page 1878 of 4087

LEXUS SC400 1991 Service Repair Manual (d) Disconnect the two engine wire connectors from theconnector bracket on the front side of the LH delivery pipe. (e) Disconnect the eight injector connector. 7. REMOVE FUEL RETURN PIPE (a) Re

Page 1879 of 4087

LEXUS SC400 1991 Service Repair Manual INSPECTION OF INJECTORS 1. INSPECT INJECTOR INJECTIONCAUTION: Keep injector clear of sparks during the test. (a) Disconnect the fuel inlet hose from the fuel tube. (b) Connect SST (hose) to the fu

Page 1880 of 4087

LEXUS SC400 1991 Service Repair Manual (g) Install the grommet and a new O±ring to the injector. (h) Connect SST (hose) to the injector with SST (union),and hold the injector and union with SST (clamp). SST 09268±41045 (i) Put the i
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