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Df 140 RPM drops

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  • Df 140 RPM drops

    I have a df 140 that when running loaded at almost max rpms suddenly drops about 500rpm, a few seconds later it will surge and gain the 500rpm again.

    No alarms.

    I am not hitting the rev limiter...

    Seems like a brief fuel delivery problem.

    Ideas???

    Thx!!

  • #2
    have you serviced you vst little filter in there

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    • #3
      Mitch,

      VST - are you talking about the small filter in the high pressure fuel pump?

      Thanks, Simon

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      • #4
        yes that one

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