L84 fuel percolation - NCRS Discussion Boards

L84 fuel percolation

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  • Michael G.
    Extremely Frequent Poster
    • November 12, 2008
    • 2157
    #1

    L84 fuel percolation

    Is the actual fuel percolation in an L84 engine taking place in the spider tubing? Can I eliminate it by cooling the spider? (I've already tried 100 Low lead aviation fuel without success.
    Mike




    1965 Black Ext / Silver Int. Coupe, L84 Duntov, French Lick, 2023 - Triple Diamond
    1965 Red Ext / White & Red Int. Conv. - 327/250 AC Regional Top Flight.
    Tags: None
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    • Jack C.
      Extremely Frequent Poster
      • September 30, 1992
      • 1090
      #2
      Re: L84 fuel percolation

      Did you try to wire the heat riser to the open position?
      Jack Corso
      1972 Elkhart Green LT-1 Coupe 43,200 miles
      Top Flight 1994, 2018 & 2021
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        • Duke W.
          Beyond Control Poster
          • January 1, 1993
          • 15670
          #3
          Re: L84 fuel percolation

          Rochester FI engines have no heat riser passage through the manifold/baseplate and no heat riser valve.

          Duke
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