why do I only get 12 mpg.

1987 CHEVROLET S-10
2,500 MILES
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97S10V8
  • MEMBER
  • 6 POSTS
2.8 tbi. Checked fuel pressure, 02 sensor, 5 v. going to map sensor, no restrictions in air intake. whats left? 02 sensor was black( but checks good), plugs are somewhat black.
Mar 2, 2012 at 4:34 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
IT sounds like it is running rich.
Mar 2, 2012 at 7:25 PM
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