140L idle

[Henderson,Eric]

I would not hesitate to fit a new piston and ring.

Eric.

-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Michael Ramsey
Sent: Thursday, October 02, 2003 9:45 AM
To: discussion at nsrca.org
Subject: Re: 140L idle


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
>
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