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Paul,
'Percolation' is the actual boiling off of the fuel in the float bowls of a carbureted engine ... and it sounds just like an 'old-fashioned' coffee pot, which is where the term comes from! You can hear it happen and smell the fumes 5-10 minutes after shutdown on a hot summer day ... and last summer I seem to remember telling a board member to sit and watch/listen/smell the engine, and he did, and actually found that happening!
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Warren Hall
1973 911S Targa
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