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| F Series Forum covers questions and discussions regarding Ford F-150, Ford F-250, Ford F-350, Ford F-450, Ford F-550, Ford F-650, and Ford F-750. |
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#1
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Engine Pinging
Have a friend with a 2003 F-150 with a 5.4 with 40,000 mile. Started pinging 2 tanks of fuel ago and is not setting any codes. Any ideas ? Thanks
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#2
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Re: Engine Pinging
Mixture could be too lean. Check for a vacuum leak. Ignition timing is probably advanced too much.
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