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1. 10:18 AM - Bonanza with IO-520BB idles rough (martymitchell)
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Subject: | Bonanza with IO-520BB idles rough |
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!
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Marty Mitchell
Bonanza N44GN
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http://forums.matronics.com/viewtopic.php?p 4248#204248
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