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Lexus
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1996
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LX 450
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System Tests W/O Codes
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Symptoms
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Engine DRIVEABILITY Problems
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Engine Knocks
Engine Knocks
Ensure ignition timing is correct.
Check knock sensor (if equipped) and wiring.
Check EGR system.
Check valve timing and timing belt (if equipped).
Check Engine Control Module (ECM) and wiring.