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     1. 10:18 AM - Bonanza with IO-520BB idles rough (martymitchell)
 
 
 

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Time: 
10:18:16 AM PST US
Subject: 
Bonanza with IO-520BB idles rough
From: 
"martymitchell" <orders@martymitchell.com>
      
      
      I have an IO-520BB in my Beech Bonanza that runs rough at idle and low RPM.  I
      have changed the spark plugs, cleaned the injectors, checked the mag timing (just
      installed after 500 hour inspection and new distributor block), and had a
      mechanic check the idle fuel pump pressure and idle mixture setting.  
      
      I also did a compression check and all cylinders are above 60/80. There doesn't
      seem to be any difference in drop with each mag at various RPM's.  I have not
      changed the ignition wires.
      
      Any ideas on other things to look for?
      
      Thanks!
      
      --------
      Marty Mitchell
      Bonanza N44GN
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p 4248#204248
      
      








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