Intuitively, something seems wrong with the linkage between the butterfly and fuel metering arm in my Precision Silver Hawk EX Fuel Injection. I suspect this may be something I'm just not understanding correctly.
As the throttle is opened to about 3/4, the linkage comes to center on the throttle arm and the fuel metering arm opens no further. As you move the butterfly to the WOT stop the linkage moves over center and the fuel metering arm moves to a slightly leaner position. This is how the unit came from the factory on my Aerosport IO-375.
Following is a link to a youtube video showing the linkage in motion. I refer to "mixture arm" in the video, I meant to say "fuel metering arm" (which is another assumption in itself). I'm hoping someone here knows a lot more about this than I do. Thanks! - Mark
http://www.youtube.com/watch?v=Ci5se-MuA7A
As the throttle is opened to about 3/4, the linkage comes to center on the throttle arm and the fuel metering arm opens no further. As you move the butterfly to the WOT stop the linkage moves over center and the fuel metering arm moves to a slightly leaner position. This is how the unit came from the factory on my Aerosport IO-375.
Following is a link to a youtube video showing the linkage in motion. I refer to "mixture arm" in the video, I meant to say "fuel metering arm" (which is another assumption in itself). I'm hoping someone here knows a lot more about this than I do. Thanks! - Mark
http://www.youtube.com/watch?v=Ci5se-MuA7A
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