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Buick
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1986
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Skylark Custom, 2.5 U
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Repair and Diagnosis
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Engine Performance
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System
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Fuel Injection System - TBI
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Removal & Installation
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O2 Sensor
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Notes
O2 Sensor: Notes
NOTE:
O2 sensor may be difficult to remove when engine temperature is below 120°F (48°C). Excessive force can damage threads.