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Hi
i own a 914 rotax ,i have new little problem
my pink coolant go in my overflow bottle but dont go back on they engine
i check all my hose and attach nothing goes wrong
how can i find it the problem
  • Re: cooling overflow bottle

    by » 12 years ago


    Richard,

    If this is a new problem and the overflow bottle has been acting correctly up until now, I would suspect the reservoir or radiator cap first. If it doesn't seal properly, air will leak into the coolant system instead of the coolant being sucked back in as the system cools off. The valve mechanism that is built into the radiator cap will keep the coolant in the system until the pressure rated on the cap is reached. As the radiator cools however, a one way valve in the cap opens very easily under vacuum and pulls the overflow back into the system. You could have a leak in the system somewhere else as well. If you are losing coolant through a leak the result can be the same as you are experiencing. If coolant can leak out when hot, air can leak in when cold.

    Bill.

  • Re: cooling overflow bottle

    by » 12 years ago


    Hi richanrd,

    I agree with Bill. Rule the radiator cap in or out as the problems first. If you have someone near you with a 912 try his cap for a quick check. My other question is why are you over flowing coolant in the first place? Are you having some hot temps or could it be a bad cap? Caps tend to hold up and last a long time.

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


  • Re: cooling overflow bottle

    by » 12 years ago


    I gone a change the cap first
    and see
    Thanks

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