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Showing results for tags 'idle'.
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Basic question- sorry if it has been covered here ad nauseam- search function was no help. Neither was searching the lycoming O-360 operator's manual. What is the optimal idle speed setting on my carb for my O-360-A1D? On the ground at full rich, mine idles at around 800, goes down to 700 with the carb heat on, and runs pretty smooth at either speed. I ask because lately I seem to be getting long floats even when I nail my speeds, and I wonder if I'm making too much power at idle. I'm not in the habit of checking my gauges when I'm over the numbers, but I did on Saturday- my rpm read 850 after pulling the throttle to idle. I typically turn off carb heat on short final in preparation for possible go around. That float seemed endless though my airspeed was 70-75 as I started the flare. Could have just been the variable and gusting winds, or my being a crappy 250hr pilot...
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We have a maintenance issue on our '67 M20F that has us stumped. If we bring the throttle back slowly she idles up at 1,000RPM. If we bring her back quickly, she goes all the way back to the normal approx. 600RPM. Mechanic thought it was a failure of the throttle cable sleeve pulling out of its set and installed a new cable. Unfortunately problem did not go away. We checked it with the cowl off and strangely the throttle body is at it's idle stop in both cases, whether its at 1,000RPM or 600RPM. Anyone got any thoughts?
