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<DIV>
<DIV>George,</DIV>
<DIV> </DIV>
<DIV>I used an eye loop to catch the flashing. I couldn't tell it was the
problem until I put the spring on and compressed the seal a bit. Didn't contact
much and could barely see it, but worked fine after I trimmed it and put it back
together.</DIV>
<DIV> </DIV>
<DIV>See ya,</DIV>
<DIV> </DIV>
<DIV>Larry</DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="FONT: 10pt arial"><B>From:</B> <A
href="mailto:geobet@gis.net">george kennie</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, June 14, 2003 7:48
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: 4-stroke problem</DIV>
<DIV><BR></DIV>Bob, <BR>The silicon valve and it's seat look perfect looking
through a loop and it holds back pressure under manual manipulation. The check
valve appears to be operating normally and the condition persists both in the
plane and on the bench with two different check valves. <BR>Thanks for the
suggestions. I will probably have to send it back, but was hoping to avoid
doing so. <BR>Georgie
<P>Bob Kane wrote:
<BLOCKQUOTE TYPE="CITE">You have tried everything I can think of.
Something is holding the regulator plunger open or the little silicone valve
or seat is damaged. I notice from the manual that the tank is pressurized
the "old fashioned" way via a nipple above the regulator. Have you tested
the check valve? Could the check valve be allowing back pressure from the
tank to get to the diaphram and holding it open? Just a thought.
<P><B><I>george kennie <geobet@gis.net></I></B> wrote:
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">I'm
having a difficult time with a brand new YS-63. Running Powermaster
<BR>YS-Blend 20/20, 12X6 APC, OS-F. It starts O.K., but when you advance
the <BR>throttle to full it takes about 20 seconds to slowly build up to
max rpm <BR>and then if you retard the throttle to anything below 8-9k rpm
and leave <BR>it there within approx. 5 seconds it will start to "splat,
splat, splat" <BR>and then abruptly quits, or if you try to advance the
throttle it will <BR>do the same thing and quit.After it quits, fuel will
well up in the carb <BR>bowl and overflow like the plunger in the
regulator is not seating, <BR>however I have inspected the regulator and
the plunger silicon valve and <BR>everything appears O.K. I can even blow
through the feed aperture in <BR>the regulator and no air will go through
it until I push on the plunger. <BR>The are no burrs or any stickiness
impeding the smooth operation of the <BR>plunger and yet after a short run
of a few seconds it acts like the <BR>plunger is sticking in the depressed
position.I've tried turning the <BR>regulator screw as much as a couple of
turns in as well as out and <BR>nothing seems to help. <BR>Anybody know
why the regulator seems to be allowing fuel passage when <BR>the engine
isn't running? I compared the regulator spring length to a <BR>brand new
unit and it has the same length. There are no holes in the <BR>diaphragm
and the silicone valve seat appears smooth and does seat and <BR>seal
manually. <BR>It will Idle, but as I recall that's a completely separate
fuel <BR>circuit.Is there something in the high speed carburetor circuit
that <BR>could be malfunctioning in such a way that pressure is getting
back to <BR>the top side of the plunger and holding it in the open
position? <BR>What do I do here, guys? Eric? Anyone? <BR>Thanks guys,
<BR>Desperate Georgie
<P>===================================== <BR># To be removed from this
list, send a message to <BR># discussion-request@nsrca.org <BR># and put
leave discussion on the first line of the body. <BR>#</P></BLOCKQUOTE>
<P>Bob Kane <BR>getterflash@yahoo.com
<P>
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