[NSRCA-discussion] OS 140RX Need Help

[Snaproll4 at aol.com]

To check the main bearing:  When the engine is warm, rock the prop  back 
and forth.  A very little play is OK.  Anything more needs  replacing.  It is 
unlikely the front bearing needs replacing.  I  always ran my 140 1 turn out 
on the HE needle.  I would start with the low  end needle.  140's have 
always run rich on the low end.
 
Steve
 
 
In a message dated 8/8/2009 10:14:56 P.M. Eastern Daylight Time,  
lld613 at psci.net writes:

 
When I get it lean by  pinching the fuel tube it will transition ok until 
it loads up  again… 
Is this consistent  with the main bearing. I have a set of bearings to 
install if needed…Would  rather not, unless this is the cause… 
Larry 
 
  
____________________________________
 
From:  nsrca-discussion-bounces at lists.nsrca.org  
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Chris Moon
Sent: Saturday, August 08, 2009 9:07  PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] OS 140RX  Need Help
Main bearing.  No acceleration and  loading up are classic  signs.

Chris



-- Sent from my  Palm Pre


 
____________________________________
 
Lisa n Larry  wrote: 
 
I’m trying to get a  plane going to make the Quincy, OH contest next  
weekend… 
When running at idle  or the engine isn’t running, fuel leaks out of the 
carb. I can get it started,  but loads up in about ten seconds and bogs down 
and dies when increasing the  throttle… 
If I pinch the fuel  line, it leans out and recovers. As long as I stay 
near full throttle it’s  fine…When at half throttle and lower it will bog  down
…. 
HS needle is at about  1-3/4 out leaned from about 2 turns out. I don’t 
know the pump  settings. 
This is a used engine  already installed in a plane… 
Is it just a matter  of the pump pressure being too high or do I have other 
problems to deal  with…??? 
Larry  Diamond 
NSRCA  3083
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