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JPI 450 FF erratic


PeytonM

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I’ve had the above device installed as a standalone fuel flow system in my 201 for over 20 years and it’s performed flawlessly. Over the past month/ half dozen flights the flow readout has fluctuated wildly, from 2 to 100+ GPH!  However, half the time it works fine, even during the same flight!  Seems to always work during taxi. What’s your best guess: transducer going bad ($300+), bad connection?  Someone suggest air leaks! No evidence of fuel leak. Why would it work one day and not the next? 

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