fast idle

my 85 ford f-150 /300-6 has developed a high idle. what could be the cause?

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On Tue, 06 Sep 2005 18:28:30 -0400, "junkyarddawg"

A vacuum leak would be my first thought. IIRC, that engine had a Carter carb. I would look closely at the electric choke to be sure it is clean and working properly.
Lugnut
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