Does Changing Your Spark Plugs Help Your Gas Mileage? [Solved]

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Does Changing Your Spark Plugs Help Your Gas Mileage? [Solved]

Replace Spark Plugs The National Institute for Automotive Service Excellence indicates that bad spark plugs can decrease fuel economy by up to 30%, and can cost drivers up to about 94 cents per gallon at today’s prices.

Spark Plug Experiment and MPG

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Do new spark plugs increase MPG?

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Common Spark Plug Installation Mistakes that Cost You Gas Mileage on Your Car or Truck

Avoid these common