All, the first thing I would do is to verify that the flapper behind the air filter actually flaps up and down.I had the case on my brothers Coupe where the actuating wire of the flap was hooked up wrongly, cause the flap not to move at all. The 'smart' mechanic then loosened the nut that holds the actuating arm and voila you could move the carb heat wire again. It was moving the attached lever as well, but NOT the flapper inside.The symptom was that one did not have a drop in rpms on runup. I also had ones significant air leak in the intake system. I think that the RPM drop was still there. Maybe the working carb heat was smoothing things out - I do not remember much of it. However. I would make sure that I actually can see the flap going up and down through the hole where the airfilter is. Hartmut
To: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Mon, 18 Feb 2008 00:09:56 +0000Subject: [ercoupe-tech] carb heat Thanks for the help. That sounds like it, before the annual I noticed not much rpm drop at run up but was fine in flight, bet something is loose,we made it worse by cleaning and working on the engine. _________________________________________________________________ Shed those extra pounds with MSN and The Biggest Loser! http://biggestloser.msn.com/
