Ford F150 Ethanol

1915 FORD F-150
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TERBOB
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Noises problem
Ford F150 V8 Four Wheel Drive Automatic 130000 miles

I recently added 3/4 of a tank of Ethanol to my unleaded fuel tank. Immediately after I noticed a sound and slight vibration. What can I do to prevent this from doing serious damage to my truck? Will this problem go away by adding in unleaded gas slowly to the tank of mixed fuel? The Engine is a 4.6L and the Mileage is in kms. Thank you for any help you can provide.
Nov 22, 2009 at 11:33 AM
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JACOBANDNICKOLAS
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What year is the truck? Is it designed to run ethanol? It should clean itself up after that fuel is gone. Don't expect good fuel economy. And yes, I would add regular fuel when as the tank gets low enough to do it.
Nov 22, 2009 at 12:30 PM
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TERBOB
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The truck is a 2003. It is not designed to run on Ethanol. Thank you for the information. Have a great day.
Nov 22, 2009 at 10:22 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
You may want to consider draining it if the truck isn't designed for it.
Nov 22, 2009 at 11:20 PM
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EDDY2000
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from what i`ve read it shouldn`t hurt but i wouldn`t do it again. unless your vehicle says flex fuel it isn`t made to run ethanol. most stations have 10% added but i`m told it won`t hurt.
Nov 26, 2009 at 8:14 AM
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