1967 Buick Skylark why black smog wen staret

1967 BUICK SKYLARK
107,000 MILES • V8 • 2WD • AUTOMATIC
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BRAVO19705870
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when star the motor is caming a black smog why?
Mar 18, 2008 at 12:40 AM
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RASMATAZ
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The choke plate needs adjustment-might not be opening
Mar 18, 2008 at 5:19 AM