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Hello Everyone,

Merry Christmas and Happy New year to all,

I have a little issue with one of my engines installed on Autogyro Callidos.

Engine: 914 ULS - Less than 100 hours

General: Engine runs perfectly fine at all RPMs and mag check is perfect.

I have lately started to experience a sudden drop of RPM (About 300 - 400) when the Turbo kicks in and then it comes back alive with full RPM bringing the engine to 5800.
This drop always happens when I suddenly push the throttle from about 5300 to full boost.

I have checked and calibrated the Turbo Gate position and inspected all hoses for leaks etc..

This is a fairly new engine with less than 100 hours and this issue is recent.

Any suggestions on what could be the issue before we go to extreme measures.

My last diagnoses is I am suspecting some dirt in the carbs .. Could I be wrong?

Please advise.

Andre'
  • Re: 914 Power Drop when Turbo kicks in

    by » 9 years ago


    Hello All,

    Just a little update!

    Problem resolved thanks to my friend Roger Lee for his recommendations to call Mr. Rick Wright at Copper State Aero.

    I spoke to Rick and when I explained the symptoms, he immediately knew what could be wrong and was 100% sure to guide me on where to check. It was an air leak in the Carbs.

    Thank you Rick and thank you Roger.

    Andre'

  • Re: 914 Power Drop when Turbo kicks in

    by » 9 years ago


    Hi Andre,

    Glad it worked out. I knew he was a good source for this.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


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