289 clanking under the valve covers
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07-18-2012, 05:52 PM
Join Date: Jul 2004
Location: At Speed
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Pull the plug wires one at a time to see if that isolates it at all.
A lot of old Fords have broken pistons that make all sorts of strange noises.
Worn piston pins can allow the piston to hit the head which makes a lot of noise at idle.
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