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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Paul,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Look toward the exhaust system on this one and not the engine.
Not that a really bad ring or a bad piston could be the issue, but I often have
seen issues with the exhaust system.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The symptoms suggest a plugged exhaust.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>What pipe are you using. If it’s a CF pipe I will bet that
is where the issue is.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Sticking regulator parts could be a result be these will show at
idle more.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>One more thing is smoke trail is not a sign of rich on the YS
engines. It usually is a sign of being too hot. When the engine gets really hot
as in over heated the oil will flash on the exhaust system and burn. If the
exhaust system is plugged up in some way this will cause overheating.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I know you are not talking about a DZ but the Dingo engines like
that 30% heli fuel. It has the Low-Vis oil. This oil will flash at lower temps.
So you always have a smoke trail lean or rich. Get it really lean or really hot
and it will smoke like crazy at the mid throttle settings.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Look to Exhaust blockage, header, coupler, pipe. If its CF
pipe you should replace it or remove it and see if the engine acts
normally. Another option is a semi clocked up fuel filter. I know it
sounds funny as if its clogged it won’t load up….Here is why I say
that. A semi clogged fuel filter will require really rich HS needle settings,
2.5-3 turns open…but at full power its starving for fuel and heating up
getting really hot. Then you throttle back to mid stick and the HS is so rich it’s
trying to flood it. The excess heat from running lean at the top end, added
with the excess fuel in the middle means tons of smoke.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Next thing if it’s not exhaust is we can look inside at a
few things. If you are interested I can see what’s up with the engine.
Contact me off list and we’ll get you fixed up. It is something simple I’m
sure the 140FZ, 140 Sport are just too docile of motors to have much wrong with
them. If all else fails you can send it to me and I’ll get it setup and
right.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Send me a note on my Blog <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="http://www.patternflyer.com/troy">www.patternflyer.com/troy</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’ll respond within a couple days if not right away. My
work load is starting to let up just a little.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Troy<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Paul
Horan<br>
<b>Sent:</b> Monday, February 02, 2009 12:18 PM<br>
<b>To:</b> General pattern discussion<br>
<b>Subject:</b> [NSRCA-discussion] YS 140 FZ: loads up and dies 2500 - 4500 rpm<o:p></o:p></span></p>
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<p class=MsoNormal> The problem is a YS 140 FZ that runs
fine at idle and 40 to 100% throttle but loads up around 2500 - 4500
rpm. This is especially nasty since that is the rpm range for a smooth
takeoff, once it goes to full throttle the engine does not develop full
power (about 40% power) and dies. Plenty of smoke trail so it is
not going lean. <o:p></o:p></p>
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<div>
<p class=MsoNormal> Another symptom is on the ground
running 2500 - 4500 rpm the rpm is not steady. <o:p></o:p></p>
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<div>
<p class=MsoNormal>Help,<o:p></o:p></p>
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<div>
<p class=MsoNormal>Paul<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>NSRCA 3606 <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p>
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