1991 Gmc Sierra Dose Truck Blow Black Smoke Step On Gas

1991 GMC SIERRA
31 MILES
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ANONYMOUS
  • MEMBER
  • 1 POST
why dose my truck blow black smoke when i step on the gas
Mar 25, 2013 at 4:44 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Its running too rich-check the fuel pressure if its within specs-
Mar 25, 2013 at 6:40 PM
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