Why poor gas mileage on Chevy s 10 2000?

Answer 1

what size engine and do you have a towing packing? This has to do with gear ratio. Example. If you have a 4 cylinder engine it would have a lower gearing or with a towing package, also if it is a 4 wheel drive. This is to give it more torque. if the engine was changed lets say from a 4 cylinder to a 6 cylinder with out changing the gearing you would gain in torque and horsepower but loose in MPG. Do you do a lot of stop and go? Heavy accelerating These would also decrease mpg. Is the air cleaner dirty? Are the spark plugs carbon ed up (Black) These would be signs that the engine is running too rich. Is the engine running on all cylinders? Are you pulling something or have a heavy load? All those could cause lower MPG. Good luck!