[SPAM] Re: Re: YS140 DZ

[jivey61 at bellsouth.net]

Terry
 The symptoms were 4 deadsticks at the nats.It would run half flight and quit in level, at low throttle on downline or wherever it wanted to.For 3 weeks it ran perfect.Monday the first flight was good and second it seemed like it was lean. It was down on power. All I did was clean the pump and reassemble it and the pump high and low adjustments are different than before. It seems to be ok but I need to fly it to make sure.
When I get it running and setup again I 'm going to put a pressure gauge on the pump output side and see what the pressure should be for idle and high speed. Then I will have a benchmark to check it by.I have had problems with this engine since day 1.After 6 flts the main bearing was replaced by Rich.

Jim Ivey
Jim Ivey
> 
> From: "Terry Brox" <tbrox at cox.net>
> Date: 2004/07/29 Thu PM 10:54:24 EDT
> To: <discussion at nsrca.org>
> Subject: Re: Re: YS140 DZ
> 
> 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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