1989 Gmc C2500 Engine Runs Rough And Burns Gas Bigtime 10 Mpg 70 73 Mph

1989 GMC C2500
190,000 MILES
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HAMMMERHEAD
  • MEMBER
  • 1 POST
engine runs rough & burns gas bigtime. 10 MPG @ 70 - 73 MPH.
Nov 7, 2012 at 8:07 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
How's the engine compression? If okay give it a major tune and see what happens-low engine compression won't benefit from a tune-up-gas eater can be caused by any sub components of the vehicle-such as tires/wheel alignment/brakes/transmission-etc and the list goes on-
Nov 8, 2012 at 7:10 AM
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