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Fuel Pressure alarm

in General Tech Discussion 10 years ago

  • Re: Fuel Pressure alarm

    by » 10 years ago

    Can you post a photo of your fuel system? Top view of your engine.
      
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  • Re: Fuel Pressure alarm

    by » 10 years ago

    Rob,

    Here is a photo of my engine fuel system. The only thing different is shortly after the photo was taken I added a tee nipple to the top of the fuel distribution block with one side of the tee going to my fuel pressure sensor on the firewall. The other side of the tee of course goes to my fuel recirc line as shown in the photo. Orifice restrictors are all properly sized in the proper locations.

    912s.jpg (You do not have access to download this file.)
      
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  • Re: Fuel Pressure alarm

    by » 10 years ago

    Looks good, thanks.
    I am still waiting for some answers, I will get back to you asap.
      
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  • Re: Fuel Pressure alarm

    by » 10 years ago

    I see a fuel filter on the feed line just before the fuel pump. I may be worth while to remove it and put a tube in its place just for a test flight.
    I see a plastic wire tie on the fuel feed hose to the fuel pump. Make sure that is not tight. It can and will restrict flow. I have seen it a few times. If there are any clamps on the fire sleeve hose make sure those aren't too tight. I have seen people put clamps on fire sleeve and ratchet them tight and restrict flow.

    Rule out everything no matter how odd or insignificant it may seem.

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

      
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  • Re: Fuel Pressure alarm

    by » 10 years ago

    OK, I have double checked to make sure the wire ties and firesleeve clamps are all not overly tight, in fact they are on the loose side.

    The fuel filter has been changed 3 times and checked for free flow each time. It made no difference in the low fuel pressure issue.
      
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