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Any carb specialists out there? Recently my coupe runs rough at rpm speeds from 800 to 11-1200, especially when the engine is warm like when I'm taxing after flying. It sounds like it is running on two cylinders. The spark plugs are black which obviously indicates it is running too rich. It runs great at higher speeds. Run-up procedure was normal. We adjust the mixture screw and nothing seems to make a difference. In fact, we turned it all the way in and it still kept running the same. At idle speeds, my mechanic said the exhaust was dark. Fifty hours ago(over a year and a half) we had the carb off for cleaning and float adjustments. At that time, it apparently was sucking air, not getting enough fuel and I had to have the carb heat on to keep it running. We replaced several gaskets. If my memory serves me correct, I think they were on the induction tubes. But, regardless, after installing and adjusting the idle mixture, it ran beautifully. Now, we are getting too much fuel. I suppose we'll have to remove the carb again. What a pain!!! It is a Stromberg carb. We have to remove all the cowling, propeller, several baffles. and even a couple of the induction tubes to get the $@&*?# carb out. Is this the standard procedure for removing a carb from a coupe? That takes longer than servicing the carb. Is there an easier way? I, also, noticed a lot of blue fuel stain on the inside of the bottom cowling. I don't see any dripping with engine off. Last week, assuming that the FBO fuel attendants topped-off my fuel, I flew a little less than two hours and took 15.6 gallons. Not good fuel economy! I am going to check it tomorrow after flying it over an hour today. Couldn't fill it as it started to rain. When I approached the runway today, I pulled my carb heat on all the way and I thought the engine was going to quit on me. When I pushed it in about a quarter of an inch, it ran fine. Thanks in advance for any info regarding this dilemma. Dallas 93555 Lakeville, MN 952-892-6370 612-396-3884 cell ====================== TO UNSUBSCRIBE go to: http://ercoupers.com/lists.htm
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