I don't think SeaFoam will help these Johnny,
The port goes through the intake for about 7 inches and is quite small as he stated.
It gets plugged with carbon from the cooling exhaust gas passing through it.
in earlier models ford ran coolant passages beside it to keep it hot so the gasses wouldn't coke up, in later models they widened the passage. And all Fords have this problem. I've cleaned hundreds. From Crown Vics and Lincolns to Escorts to F series trucks.
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When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
Albert Einstein
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