Mike, can't remember what engine or carb you have. Pulling the power back and having the engine stumble sounds suspiciously like the problem I had with my VW with the Zenith carb that went very rich and fouled plugs at mid throttle settings. I confirmed what the problem was by installing a mixture meter as many others here also suggest.
Brian Kraut EA Manufacturing, LLC 904-536-1780 -------- Original Message -------- Subject: KR> first flight details. From: Mike Sylvester via KRnet <krnet at list.krnet.org> I started descending back to the pattern with carb heat on. I was going to extend the downwind to give me a long approach so I pushed carb heat off and added throttle. Started a turn to base and that's when things went bad. The engine started stumbling, needless to say, the funny thing is that I was more worried about destroying the plane than I was getting hurt. I had been in contact with my friend on the ground, calling out temps, pressures and pilot status. I told him I had a Mayday situation with engine dying, his response w Mike Sylvester kr2s builder Birmingham,AL. Cell no.205-966-3854 _