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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 Mechanical
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Mechanical
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Gasoline Engine Trouble Shooting
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Condition & Possible Cause
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Intake Backfire
Intake Backfire
Improper ignition timing.
Faulty accelerator pump discharge.
Improper choke operation.
Defective EGR valve.
Too lean fuel mixture.
Initial choke valve clearance too large.