Mike's Workshop Manuals
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Buick
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1980
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Skyhawk Base, Automatic Trans
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Repair and Diagnosis
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Engine Performance
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Exhaust Gas RECIRCULATION (EGR) System
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Trouble Shooting
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Runs Rough On Light Throttle Poor Part-Throttle Performance
Runs Rough On Light Throttle Poor Part-Throttle Performance
Hoses routed improperly. Loose EGR valve. Stuck or binding EGR valve, no gasket or spacer.