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912 fuel pump replacement

in 912 / 914 Technical Questions 13 years ago

  • Re: 912 fuel pump replacement

    by » 11 years ago

    I've been tolerating the erratic fuel pressure on my 912uls since I got it in 2009. The pressure recently dropped to zero, the engine kept running fine, turning on the boost pump gradually brought it up to 0.2 bar. When it's normal it reads about 0.38 bar, with or without the boost pump.
    So I'm thinking of trying a new pump. From what I can determine the new part number is 893 110.

    Does anyone have a list of model numbers of the fuel pumps that have been used in the last 5 years?
      
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  • Re: 912 fuel pump replacement

    by » 11 years ago

    Hi Jim,

    None of the old pumps are around any more. Typically it isn't the fuel pump that causes a fluctuating reading. It is either the fuel pressure sender (95% of the time) or you need a fuel pressure dampening valve inline to dampen the fuel pressure pulsation. To prove it to yourself it isn't the pump buy an inexpensive 0-10 psi gauge and get some cooper tubing and make a fuel pressure test gauge. Start the engine and see what's not right.
    Fuelpressuredampener.jpg (You do not have access to download this file.)

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

      
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  • Re: 912 fuel pump replacement

    by » 11 years ago

    Hi Lee

    my fuel pump are Pierburg 996 593,i call lockwood for sb and the sellers offer a remplacement for 98$

    but the fuel pump need the get a specific number serial (bing)

    after i check my serial number i relize i have a different fuel pump

    the seller told me, thats the best one they never made keep this one

    Is it affect by the SB because on the video rotax they start with fuel pump bing

    i am confuise

    Thank you
      
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