Orma wrote: > I did not read that you actually found moisture when you sumped the fuel > tank. I would visit the NOAA site and find out the Temp and Dew point for > the time that you were flying. Carb ice is a real threat, and will chock > the carb enough to lean the engine and make it quit.
Oscar already did that for me, but I'm pretty sure it wasn't carb ice. It would run fine, start missing abruptly, and then go normal again. Most of the time I was at full throttle or close to it, and it seems to do it more often when climbing. I don't think that's how carb ice works. I have a carb throat temp sensor and although the flight started out in the twentys, carb heat raised the inlet air to about 70F, which is the way I flew it for much of the rest of the flight. I tried every conceivable combination of throttle setting, ram air, and carb heat, but it kept stumbling on an erratic basis. Another clue is that the mixture meter would be reading perfectly, and then drop to very lean while while the engine stumble was going on. A check of the EIS log shows fuel pressure remained constant throughout the occurance. I just got back from draining my tanks and there's not a trace of water anywhere, not even the in the carb diaphragm. I poured some methyl alcohol in the tanks to mix with any water, and tomorrow I'll add a little gasoline and flush it again. Mark Langford, Huntsville, Alabama see KR2S project N56ML at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.net --------------------------------------------------------------
