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Old 10-23-2019, 05:39 PM
Larry DeCamp's Avatar
Larry DeCamp Larry DeCamp is offline
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 992
Default Sooty plug options ?
My 0320 carb engine shows sooty plugs upon removal. Yet the electrode appears brown. I always lean to rough, then smooth when flying. My idle cut-off rpm rise is only about 20-30 RPM rise. I made it more rich to avoid possible approach issue in winter. Is the idle soot a non issue ? Any thoughts/suggestions ? Oh' BTW, I use no ethanol mogas.
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Larry DeCamp
RV-3B flying w/7:1 0320 / carb / Pmags / Catto 3b / digital steam
RV-4 fastback w/ Superior roller 360/AFP/G3X/CPI/Catto3b
Clinton, IN
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Old 10-24-2019, 08:39 AM
Bo1000 Bo1000 is offline
 
Join Date: Nov 2013
Location: Austin
Posts: 28
Default Lycoming says...
I came across Lycoming's comments on spark plug interpretaton just last night in http://www.aerovalley.org/data/Manua...20REPRINTS.pdf

See pg 85.


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