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John... Wow...tanksbunches. Since I am not fully suicidal yet, I have attempted the procedure with the engine not running. Your comments have helped tremendously since I was obviously working from the opposite wrong assumption. Might there be a particular RPM range that 's best when attempting the adjustment. I am familiar with the throttle stop assembly adjustment itself in addition to the mixture valve assembly screw. Buck ----- Original Message ----- From: "John Cooper" <[EMAIL PROTECTED]> To: "Ed Robbins" <[EMAIL PROTECTED]> Cc: "ercoupers" <[email protected]> Sent: Wednesday, November 16, 2005 12:00 PM Subject: Re: [COUPERS-TECH] Ercoupe Decal and Idling Problems > At 11:29 AM 11/16/2005, Ed Robbins wrote: > >Based on what the two of you have said, I think maybe I have leaned > >the idle mixture too much, believing it to be too rich, > > It is difficult to correctly adjust the idle mixture on a Stromberg, > for procedural reasons. The most accurate way is with the engine > running. Unfortunately, there seems to be some sort of mesmerizing > effect of that whirling meat cleaver in front, and some folks find > this method fatal. That said, the way to do it is to lean the > mixture until the engine begins to stumble, then richen it until you > reach maximum RPM. Set the idle speed to the desired speed plus 25 > RPM. Repeat until no further rpm increase can be obtained by > adjusting the mixture. Finally, richen the mixture further until > desired idle speed is obtained. > > > John Cooper > Skyport Services > PO Box 249 > 4996 Delaware Tnpk > Rensselaerville, NY 12147 > 518 797-3064 > Fax 518 797-3865 > > ============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
