----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
John 1. No carb leaks whatsoever when the engine is off (header tank valve open). 2. IMHO the most credible theory, so far, is partially obstructed mixture plate holes, suggested by both H Francis and WR Bayne. Crud shifting around the mixture plate holes would explain the changes in behavior. 3. Grounding the thing is good advice. Regards Eliacim Quoting John Cooper <[EMAIL PROTECTED]>: > ----[Please read http://ercoupers.com/disclaimer.htm before following any > advice in this forum.]---- > > > At 11:52 AM 6/26/2006, Ed Burkhead wrote: > >Stromberg carbs have some small air passages related to the mixture > control. > >These lead to the mixture control assembly which has a fixed (removable) > > I'm more than a little concerned about this issue. Off the top of my > head, I can't think of much you can do to a Stromberg that will > result in a rich mixture without also having a leak when the engine > is off. One thing that could be causing it is an obstruction in the > inlet system, before the carb, but that doesn't fit with the "full > rpm for a moment followed by a loss of RPM" as described before. > > The engine should not run at sea level with the mixture all the way > out and the throttle all the way in. > > At the very least, I would NOT fly it until I was convinced I > understood the problem and had corrected it. > > > John Cooper, A&P > Skyport Services > PO Box 249 > 4996 Delaware Tnpk > Rensselaerville, NY 12147 > 518 797-3064 > Fax 518 797-3865 > www.skyportservices.net > > ============================================================================== > To leave this forum go to: http://ercoupers.com/lists.htm > > > > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm
