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Severe Jittering Oil Pressure

in 912 / 914 Technical Questions 9 years ago

  • Re: Severe Jittering Oil Pressure

    by » 7 years ago

    Hi Alan,

    Just replace the ball bearing with the little mushroom. I hope there is still a ball bearing in there? Do not use a shim. 99.9% of the time this isn't the problem and people watch what they think is low pressure on the cockpit gauge when it is really over pressured.
    First if you have not replaced the sender do that. Absolutely put a wrench or screwdriver on all your grounds. It may be hand tight, but wrench lose. Poor grounds are famous for causing fluctuating oil pressures. Check the oil pressure wires themselves and make sure they are making a good connection right up to the gauge.

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

      
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  • Re: Severe Jittering Oil Pressure

    by » 7 years ago

    Thank you Roger. Yes, the ball is there. I'll order parts Monday and check my wiring while waiting for some good weather.

    Alan
      
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  • Re: Severe Jittering Oil Pressure

    by » 7 years ago

    Hey Alan, just a thought;

    When you replace the ball bearing with the mushroom make sure you replace the spring too. It's cheap enough. maybe you already did the spring as it should have been done with the new style plug screw.

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

      
    Report

  • Re: Severe Jittering Oil Pressure

    by » 7 years ago

    I did do the spring but I'll do it again.

    Thanks,

    Alan
      
    Report

  • Re: Severe Jittering Oil Pressure

    by » 7 years ago

    Hi,

    I have the same issue :( on start up oil pressure is fine 3 bar (30-50psi) green give or take photo of my gauge below... the once warmed up it jitters unacceptably .... small clip also here below...

    https://www.dropbox.com/s/mhic3xhnbr28gab/IMG_2795.mp4?dl=0


    any suggestions please?
    OILPRESSURE.JPG (You do not have access to download this file.)
      
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