2003 LEXUS LS430 Factory Repair Manual

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Page 3281 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 2: Identifying Proper Ribbed Grooves Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 7.INSPECT IGNITION TIMING a. Warm up the engine. b. Check the ignition timing. 1. Connect the hand-held te

Page 3282 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 3: Checking Ignition Timing Connecting Hand-Held Tester DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 8.INSPECT ENGINE IDLE SPEED a. Warm up the engine. b. Check the idle speed. 1. Con

Page 3283 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 4: Checking Engine Idle Speed Connecting Hand-Held Tester DLC3 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. HINT: Please refer to the hand-held tester operator's manual for further details

Page 3284 of 4500

LEXUS LS430 2003 Factory Repair Manual f. Remove the spark plugs. g. Disconnect the 8 injector connectors. h. Check the cylinder compression pressure. SST 09992-00500 1. Insert a compression gauge into the spark plug hole. 2. Full

Page 3285 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 5: Checking Cylinder'S Compression Pressure Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. HINT: If adding oil increases the compression, the piston rings and/or cylinder bore may be worn or

Page 3286 of 4500

LEXUS LS430 2003 Factory Repair Manual c. Insert CO/HC meter testing probe at least 40 cm (1.3 ft) into the tailpipe during idling. d. Check CO/HC concentration at idle and/or 2,500 rpm. HINT: Complete the measuring within 3 minutes.

Page 3287 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 7: CO/HC Symptom Reference Chart Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. REPLACEMENT 1.REMOVE AIR CLEANER INLET NO.1 2.REMOVE FAN AND GENERATOR V BELT a. Loosen the belt tension by tur

Page 3288 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 8: Removing Fan And Generator V Belt Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 3.INSTALL FAN AND GENERATOR V BELT a. Set the V belt to everything except the idler pulley No. 2, as shown in
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