YS140 DZ

[Terry Brox]

Hi Jim,
         What were the symptoms? I had some problems with mine running lean
on the low end.  I just got it running good again, but only after turning
the pump in 3 1/2 turns. I flew 4 full flights including running out of fuel
and not a hiccup. I am still concerned what changed though. I checked the
pump as described by Richard and it is ok (checking the side play of the
pushrod). Anyone else have this problem.
PS all fuel lines, foam clunk, and filters are ok.
----- Original Message ----- 
From: <jivey61 at bellsouth.net>
To: <discussion at nsrca.org>
Sent: Thursday, July 29, 2004 7:49 PM
Subject: Re: Re: YS140 DZ


> Earl
>  After taking the pump apart again I find that the springs are shown
right, it is the pump valves that are shown reversed.Each valve should be
shown 180 deg so that the prong part mounts into the springs. This is the
way I had the valves last night and the engine ran ok.When I took it apart
the first time the whole inside of the pump had smoky looking crude in it.I
filter 2 times so I don't know where this came from.
> Anyway ,it appears to be running again. Thanks
>
> Jim Ivey
> >
> > From: "Earl Haury" <ehaury at houston.rr.com>
> > Date: 2004/07/29 Thu AM 10:06:44 EDT
> > To: <discussion at nsrca.org>
> > Subject: Re: YS140 DZ
> >
> > Yup - the drawing is backwards. The spring goes to the side with the
> > machined X. (Spring away from engine on top - toward on bottom.)
> >
> > Earl
> > ----- Original Message ----- 
> > From: <jivey61 at bellsouth.net>
> > To: <discussion at nsrca.org>
> > Sent: Thursday, July 29, 2004 7:57 AM
> > Subject: YS140 DZ
> >
> >
> > > Hi all
> > > Can someone tell me if the parts breakdown on the 140DZ pump is
correct. I
> > am speaking of the directions the pump valves are shown.I turned the
bottom
> > one reversed to way it is shown and the eng. runs.
> > >  Thanks
> > >  Jim Ivey
> > > P.S a dirty pump cost me at the nats.
> > >
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