YS 91 ac

[spbyrum]

Jawja needs it more

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On Behalf Of jim ivey
Sent: Wednesday, April 09, 2003 6:45 PM
To: discussion at nsrca.org
Subject: Re: Re: YS 91 ac


Now John......which state do you give the biggest handicap? Be very
careful 
here.

Jim I


jivey61 at msn.com





>From: John Gausby <humptybumpty at earthlink.net>
>Reply-To: discussion at nsrca.org
>To: discussion at nsrca.org
>Subject: Re: Re: YS 91 ac
>Date: Wed, 9 Apr 2003 16:42:13 -0400 (EDT)
>
>You'r forgivin Jimbo.....I always give the Ga. and Al. guys some
handicap 
>room................now i done it!!!!!!!!!!!!!!!!! I'm signing 
>off............J
>
>
>
>
>
>-------Original Message-------
>From: jim ivey <jivey61 at msn.com>
>Sent: 04/09/03 04:50 PM
>To: discussion at nsrca.org
>Subject: Re: YS 91 ac
>
> >
> > William
>Eric hit the nail on the head. I had a problem,with a friends plane
just
>like this at The Peach Pattern Classic 2 weeks ago and it was the check
>valve.I caught the problem when the tank didn't phutt(spew) much when
>relieved of pressure.We changed the check valve and then had to
reneedle
>the
>engine.This solved the problem.
>I have had these pressure problems enough times, that I have made a
>pressure
>tester.I used a hobby tire pump, a check valve (to keep the pressure
from
>leaking back through the pump) and a pressure gauge from automotive
>supply.Plumb it with fuel tubing and you are in business. remove the
fuel
>supply tube from the engine and apply pressure here.This checks the
whole
>tank system,including the check valve. I usually pump to 10 psi since
the
>YS
>runs at 6-8 PSI. A tight system will hold pressure 'till next week.
>
>Now all you-uns check my english too,'" etc.Not my best class in school
>either.
>
>Jim Ivey
>
>Jim Ivey
>
>
>
>jivey61 at msn.com
>
>
>
>
>
> >From: "William Clemons" <W.Clemons at m.cc.utah.edu>
> >Reply-To: discussion at nsrca.org
> >To: <discussion at nsrca.org>
> >Subject: YS 91 ac
> >Date: Wed, 9 Apr 2003 12:42:00 -0600
> >
> >This is for the guys with YS 91 ac experience.  Have you ever had
just a
> >loss of pressure from the engine?  It will run fine for a minute and
then
>
> >dies.  I checked the fuel system for air leaks but cannot find any.
I
>even
> >swapped needle valve assemblies thinking I might have a worn out one.
>Any
> >help is appreciated the engine has run fine up to this point.
> >Thanks in advance
> >William
>
>
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