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fuel flow

in 912 / 914 Technical Questions 6 years ago
My fuel flow after engine hot sometimes goes to 9-10 gph with warning. Fuel pressure normal and engine sometimes runs rough missing occasionally. I suspect vapor lock but how does that make the fuel flow go up? The sensor is between the pump and the carburetors.

  • Re: fuel flow

    by » 6 years ago

    The vapor bubbles will enter the Carburetor much faster than liquid fuel.
    This results in the fuel flow in the hose momentarily flowing at 2-3x normal rates.

    Consider the results of Air in your house water plumping and what happens at the faucet.
    This is a common occurrence when first using a garden hose as the air clears.

    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Clicking the "Thank You" is Always Appreciated by Everyone.

      
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