140L idle

[Michael Ramsey]

Any change in the amount of engine shake at idle?

Some mounts out there actually got a little softer with wear allowing the
engine to rotate (shake) more. The extra movement tugs further on the
throttle arm. A more flexible pushrod, or more allowable movement in the
throttle arm might help.

It's possible too that the diaphragm gasket could be swelled, closing the
fuel inlets.

Michael Ramsey


----- Original Message -----
From: "Ed Deaver" <divesplat1 at msn.com>
To: <discussion at nsrca.org>
Sent: Thursday, October 02, 2003 12:46 AM
Subject: 140L idle


> Hey everyone.  Have a friend with an extemely strong 140L that has ran
> perfectly all summer long on magnum #2 with a 16.5X12APC.  About 4 weeks
> ago, it started dieing during the landing sequence, sometimes on approach
> others just after touch down, without any change to the idle trim.  On the
> ground, the thing would idle for over a minute and not sag and transition
> was good to full throttle.
>
> We have done all we can think off.  Throttle linkage was changed out,
> Throttle barrel arm changed out, everything replaced.  All fuel lines were
> replaced.  Valve cover was found to be warped a little so new gasket(leak
> free) and valve cover(sanded flat also), Valves checked, Diaphagm was
> changed.
>
> We aren't new to YS's, but this has us baffled.  He has tried adjusting
both
> pump and low end adjustments but still experience erratic idle, towards
end
> of flight.
>
> Any suggestions??
>
> Thanks in advance.
>
> ed
>
> _________________________________________________________________
> Help protect your PC.  Get a FREE computer virus scan online from McAfee.
> http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963
>
> =====================================
> # To be removed from this list, send a message to
> # discussion-request at nsrca.org
> # and put leave discussion on the first line of the body.
> #
>

=====================================
# To be removed from this list, send a message to 
# discussion-request at nsrca.org
# and put leave discussion on the first line of the body.
#