gas consumption

1994 CHEVROLET SUBURBAN
V8 • 4WD
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RANDY O
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  • 1 POST
I have a 94 chevy surburban on which I changed the motor. It sucks gas and backfires while running. is it a computer problem?
Jan 13, 2011 at 5:46 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
It could be caused by many things. Make sure there are no major vacuum leaks. Check the catalytic converters. Check to make sure the plug wires are on in the proper order. Check to make sure the fuel pressure and regulator are working properly. Check ignition timging if you had the distributor out.
Jan 28, 2011 at 4:50 PM
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