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:) Hello,

Last Saturday I experienced a zero reading lub.oil pressure during level flight at 1000 ft. Simultanously the CHT -and Lub.oil Temperature gauges read maximum. Made a precautionary landing and checked engine for leakages, however all seems to be in order. On Monday under the supervision of a qualified engineer oil filter renewed, oil tank inspected internally and oil renewed. The oil filter and also the bottom of the oil tank did not have any indication of any wear. In addition renewed the spark plugs and also this seems to be in order. After filling up with new oil engine started and lub.oil pressure and temperatures (at least on the ground, weather not good enough to take - off) were all in order.

Have anybody experience maybe the same in the past and/or has somebody any clue what exactly might have caused this zero reading and maximum readings of both temperatures.

FYI engine is a 912 ULS (100 horsepower) and just has 200 hours on the counter.

Looking very much forward to your advise / remarks / feedback.

Kind regards

Ferry van Eykel ( the Netherlands)
  • Re: Zero reading lub.oil pressure in flight

    by » 12 years ago


    Hi,

    what type of temp gauges are you setup with ? Is it by chance an Engine monitoring system ?

    It could be a ground wire to the engine monitoring system if both cht and oil temp are going up.

    I personally would be checking/cleaning all connections to sensors and gauges as well as all grounds.

    I am not a rotax expert but have learned allot by owning a 912ULS and maintaining it !

    Thank you said by: Ferry van Eijkel

  • Re: Zero reading lub.oil pressure in flight

    by » 12 years ago


    Ferry,

    I think Kevin is right. Sounds like a ground problem. Hot wires to the gauges are separate but the grounds are often common to many instruments. The cyl. head temp. and oil temp. senders are grounded to the engine block and usually the oil pressure sender too. You could have a bad ground from the engine to the frame or from the engine to the instrument panel.

    Bill.

    Thank you said by: Ferry van Eijkel

  • Re: Zero reading lub.oil pressure in flight

    by » 12 years ago


    I'm with Bill and Kevin,

    Typically if the gauges and especially more than one peg out to the max then it is a broken or poor ground. It may be a main ground because it involved more than one gauge.

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


    Thank you said by: Ferry van Eijkel, YEN NIEN YU

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