I had the "venturi problem" with my Alon. However, the one piece venturi produces too lean a mixture, not too rich.
"R.J. Chevalier" wrote: > > Hello All: I recently purchased N57Q, a 61 Forney with a C-90. After 10 > hours it began to sputter and I found the plugs fouled with dry, black > carbon. I cleaned the plugs and flew another 10 hours and it began to run > rough again. The plugs were again blackened. ----------------------------------------------- Most likely you are not leaning enough, either on takeoff, cruise, or both. > The carbon is dry and lacking > any smoke in the exhaust, I assumed the problem was that of too rich a > mixture. I live at 4000 ft... ----------------------------------------------- David Alon N6359V
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