<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>As I remember <br>
R-resistor plug<br>
S-taper seat ( Why they did not use T I don' know)<br>
17- Heat range<br>
Y- Extended Reach<br>
X- this used to be over sized gap such as 0.060</p>
<p>You could try a pair of H-10 equivalents and see if it ran
oK.... On some of the older air cooled engines if the spark plug
was too close to the piston it would burn a hole in the
piston.... That is from my old ONAN generator repair days....<br>
Cecil<br>
</p>
<div class="moz-cite-prefix">On 11/30/2019 3:51 PM,
<a class="moz-txt-link-abbreviated" href="mailto:craig.warner47346@frontier.com">craig.warner47346@frontier.com</a> wrote:<br>
</div>
<blockquote type="cite"
cite="mid:971454879.1233365.1575150690030@mail.yahoo.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]-->
So much for that theory. I bought replacements and they don’t have
washers. They’re tapered plugs. Oh well, I’ll install these and
see what happens. Prescribed plug is Champion RS17YX. I got the
cross referenced NGK TR5/2238.
<div><br>
</div>
<div>I bought it used from my neighbor a few years ago. Great
little tractor other than I’ve had to replace a bunch of
hydraulic hoses. <br>
<br>
<br>
<a href="https://overview.mail.yahoo.com/?.src=iOS"
moz-do-not-send="true">Sent from Frontier Yahoo Mail for
iPhone</a><br>
<br>
<p class="yahoo-quoted-begin" style="font-size: 15px; color:
#715FFA; padding-top: 15px; margin-top: 0">On Saturday,
November 30, 2019, 3:35 PM, Phil Auten
<a class="moz-txt-link-rfc2396E" href="mailto:pga2@basicisp.net"><pga2@basicisp.net></a> wrote:</p>
<blockquote class="iosymail">
<div id="yiv3778157764">
<div>
<p>Glad you were able to find the problem, Craig. Those
washers aren't supposed to come off, but they obviously
did somewhere. Did you buy the unit new or used?</p>
<p>Phil in TX<br clear="none">
</p>
<br clear="none">
<div class="yiv3778157764yqt5804710834"
id="yiv3778157764yqtfd42805">
<div class="yiv3778157764moz-cite-prefix">On 11/30/2019
11:52 AM, <a rel="nofollow" shape="rect"
class="yiv3778157764moz-txt-link-abbreviated"
ymailto="mailto:craig.warner47346@frontier.com"
target="_blank"
href="mailto:craig.warner47346@frontier.com"
moz-do-not-send="true">craig.warner47346@frontier.com</a>
wrote:<br clear="none">
</div>
<blockquote type="cite"> </blockquote>
</div>
</div>
<div class="yiv3778157764yqt5804710834"
id="yiv3778157764yqtfd80033">
<div> The winner is....no washers on plugs. What a dumbass
mistake. They rarely fall off and o never thought to
check. Too bad there is nobody to blame other than me.
Thanks guys.<br clear="none">
<br clear="none">
<br clear="none">
<a rel="nofollow" shape="rect" target="_blank"
href="https://overview.mail.yahoo.com/?.src=iOS"
moz-do-not-send="true">Sent from Frontier Yahoo Mail
for iPhone</a><br clear="none">
<br clear="none">
<p class="yiv3778157764yahoo-quoted-begin"
style="font-size:15px;color:#715FFA;padding-top:15px;margin-top:0;">On
Saturday, November 30, 2019, 11:57 AM, Jim Becker <a
rel="nofollow" shape="rect"
class="yiv3778157764moz-txt-link-rfc2396E"
ymailto="mailto:mr.jebecker@gmail.com"
target="_blank" href="mailto:mr.jebecker@gmail.com"
moz-do-not-send="true"><mr.jebecker@gmail.com></a>
wrote:</p>
<blockquote class="yiv3778157764iosymail">
<div id="yiv3778157764">
<div dir="ltr">
<div dir="ltr">
<div
style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri';COLOR:#000000;">
<div>My exact thought too. It seems more
likely that a set of projected tip plugs
were installed where there isn’t enough room
for them.</div>
<div> </div>
<div>Jim Becker</div>
<div
style="FONT-SIZE:small;TEXT-DECORATION:none;">
<div style="FONT:10pt tahoma;">
<div> </div>
<div style="BACKGROUND:#f5f5f5;">
<div class="yiv3778157764yqt4399327724"
id="yiv3778157764yqtfd92995">
<div style=""><b>From:</b> <a
rel="nofollow" shape="rect"
title="soffiler@gmail.com"
moz-do-not-send="true">Stephen
Offiler</a> </div>
<div><b>Sent:</b> Saturday, November
30, 2019 10:53 AM</div>
<div><b>To:</b> <a rel="nofollow"
shape="rect"
title="at@lists.antique-tractor.com"
moz-do-not-send="true">Antique
Tractor Email Discussion Group</a>
</div>
<div><b>Subject:</b> Re: [AT] Kinda
Antique Tractor Question</div>
</div>
</div>
</div>
<div class="yiv3778157764yqt4399327724"
id="yiv3778157764yqtfd23147">
<div> </div>
</div>
</div>
<div class="yiv3778157764yqt4399327724"
id="yiv3778157764yqtfd85762">
<div
style="FONT-SIZE:small;TEXT-DECORATION:none;">
<div dir="ltr">The thing about the carbon
hypothesis is that this is a twin, and
it's happening on both cylinders, sounds
like both affected equally. Doesn't
seem like a random chunk of carbon
causing the issue would occur equally in
both.
<div> </div>
<div>SO</div>
<div> </div>
</div>
<div> </div>
<div class="yiv3778157764gmail_quote">
<div class="yiv3778157764gmail_attr"
dir="ltr">On Sat, Nov 30, 2019 at
11:37 AM deanvp <<a rel="nofollow"
shape="rect" moz-do-not-send="true">deanvp@att.net</a>>
wrote:<br clear="none">
</div>
<blockquote
class="yiv3778157764gmail_quote"
style="PADDING-LEFT:1ex;BORDER-LEFT:rgb(204,204,204)
1px solid;MARGIN:0px 0px 0px 0.8ex;">
<div>
<div>It could be carbon floating
around in the combustion chamber
but also consider that when the
engine warms up expansion might
cause zero clearance between the
ground side of the plug and the
piston or valve. Check to see what
are the recommended plugs vs what
are currently installed. Also
consider high RPM might play a
role as well. </div>
<div> </div>
<div> </div>
<div> </div>
<div
id="yiv3778157764gmail-m_8151024283084706572composer_signature">
<div
style="FONT-SIZE:85%;COLOR:rgb(87,87,87);">Sent
from my Verizon, Samsung Galaxy
Tablet</div>
</div>
<div> </div>
<div
style="FONT-SIZE:100%;COLOR:rgb(0,0,0);">
<div>-------- Original message
--------</div>
<div>From: <a rel="nofollow"
shape="rect"
moz-do-not-send="true">craig.warner47346@frontier.com</a>
</div>
<div>Date: 11/29/19 9:32 PM
(GMT-08:00) </div>
<div>To: Antique Tractor Email
Discussion Group <<a
rel="nofollow" shape="rect"
moz-do-not-send="true">at@lists.antique-tractor.com</a>>
</div>
<div>Subject: Re: [AT] Kinda
Antique Tractor Question </div>
<div> </div>
</div>
I don’t know a whole lot about the
engine... not sure if it’s OHV or
not.<br clear="none">
<br clear="none">
<br clear="none">
<a rel="nofollow" shape="rect"
target="_blank"
href="https://overview.mail.yahoo.com/?.src=iOS"
moz-do-not-send="true">Sent from
Frontier Yahoo Mail for iPhone</a><br
clear="none">
<br clear="none">
<p
style="FONT-SIZE:15px;MARGIN-TOP:0px;COLOR:rgb(113,95,250);PADDING-TOP:15px;">On
Friday, November 29, 2019, 8:17
PM, Phil Auten <<a
rel="nofollow" shape="rect"
moz-do-not-send="true">pga2@basicisp.net</a>>
wrote:</p>
<blockquote>
<div
id="yiv3778157764gmail-m_8151024283084706572yiv5866834748">
<div>
<p>The first thing that comes
to mind is the piston
contacting the ground
terminal of the plug. But if
that were the case there
would be noise, I would
think, and the starting
would revert to terrible
quickly. Perhaps there is a
piece of carbon floating
around inside the cylinder
that occasionally gets
pinched between the piston
and the plug? I just can't
visualize anything else. If
the head isn't to difficult
to get to you might pull it
and check for something like
that. Is that a flathead or
an OHV engine?</p>
<p>Phil in TX<br clear="none">
</p>
<br clear="none">
<div
id="yiv3778157764gmail-m_8151024283084706572yiv5866834748yqtfd00808">
<div>On 11/29/2019 6:11 PM,
<a rel="nofollow"
shape="rect"
moz-do-not-send="true">craig.warner47346@frontier.com</a>
wrote:<br clear="none">
</div>
</div>
</div>
<div>
<div
id="yiv3778157764gmail-m_8151024283084706572yiv5866834748yqtfd36382">I’ve
got a question that’s kinda
antique tractor related
(depending on how you define
antique.) I have a 1992
Ingersoll 6018 with an Onan
16hp motor. It usually
starts and runs great. Last
few weeks it’s been terrible
to start but then runs fine.
I pulled the plugs today and
the gap was close to nothing
in both of them. Opened the
gap to.030 and it fired
right up. Why would the plug
gap close? I had issues with
them this spring and set it
at that point.
<div> </div>
<div>Thanks,</div>
<div> </div>
<div>Craig</div>
</div>
<br clear="none">
<fieldset></fieldset>
<br clear="none">
<pre>_______________________________________________
AT mailing list
<a rel="nofollow" shape="rect" moz-do-not-send="true">AT@lists.antique-tractor.com</a>
<a rel="nofollow" shape="rect" target="_blank" href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" moz-do-not-send="true">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a></pre>
<div
id="yiv3778157764gmail-m_8151024283084706572yiv5866834748yqtfd16228">
</div>
<div
id="yiv3778157764gmail-m_8151024283084706572yiv5866834748yqtfd28663"> </div>
</div>
</div>
_______________________________________________<br clear="none">
AT mailing list<br clear="none">
<a rel="nofollow" shape="rect"
moz-do-not-send="true">AT@lists.antique-tractor.com</a><br
clear="none">
<a rel="nofollow" shape="rect"
target="_blank"
href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com"
moz-do-not-send="true">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a>
<div
id="yiv3778157764gmail-m_8151024283084706572yqtfd42686"> </div>
</blockquote>
</div>
_______________________________________________<br clear="none">
AT mailing list<br clear="none">
<a rel="nofollow" shape="rect"
moz-do-not-send="true">AT@lists.antique-tractor.com</a><br
clear="none">
<a rel="nofollow" shape="rect"
target="_blank"
href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com"
moz-do-not-send="true">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br
clear="none">
</blockquote>
</div>
<p> </p>
<hr>
_______________________________________________<br
clear="none">
AT mailing list<br clear="none">
<a rel="nofollow" shape="rect"
class="yiv3778157764moz-txt-link-abbreviated"
ymailto="mailto:AT@lists.antique-tractor.com" target="_blank"
href="mailto:AT@lists.antique-tractor.com"
moz-do-not-send="true">AT@lists.antique-tractor.com</a><br
clear="none">
<a rel="nofollow" shape="rect"
class="yiv3778157764moz-txt-link-freetext"
target="_blank"
href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com"
moz-do-not-send="true">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br
clear="none">
</div>
</div>
</div>
</div>
</div>
</div>
<div class="yiv3778157764yqt4399327724"
id="yiv3778157764yqtfd12842">_______________________________________________<br
clear="none">
AT mailing list<br clear="none">
<a rel="nofollow" shape="rect"
ymailto="mailto:AT@lists.antique-tractor.com"
target="_blank"
href="mailto:AT@lists.antique-tractor.com"
moz-do-not-send="true">AT@lists.antique-tractor.com</a><br
clear="none">
<a rel="nofollow" shape="rect" target="_blank"
href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com"
moz-do-not-send="true">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br
clear="none">
</div>
</blockquote>
<br clear="none">
<fieldset class="yiv3778157764mimeAttachmentHeader"></fieldset>
<br clear="none">
<pre>_______________________________________________
AT mailing list
<a rel="nofollow" shape="rect" class="yiv3778157764moz-txt-link-abbreviated" ymailto="mailto:AT@lists.antique-tractor.com" target="_blank" href="mailto:AT@lists.antique-tractor.com" moz-do-not-send="true">AT@lists.antique-tractor.com</a>
<a rel="nofollow" shape="rect" class="yiv3778157764moz-txt-link-freetext" target="_blank" href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" moz-do-not-send="true">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a>
</pre>
<br clear="none">
</div>
</div>
</div>
<div class="yqt5804710834" id="yqtfd67929">_______________________________________________<br
clear="none">
AT mailing list<br clear="none">
<a shape="rect"
ymailto="mailto:AT@lists.antique-tractor.com"
href="mailto:AT@lists.antique-tractor.com"
moz-do-not-send="true">AT@lists.antique-tractor.com</a><br
clear="none">
<a shape="rect"
href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com"
target="_blank" moz-do-not-send="true">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br
clear="none">
</div>
</blockquote>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
AT mailing list
<a class="moz-txt-link-abbreviated" href="mailto:AT@lists.antique-tractor.com">AT@lists.antique-tractor.com</a>
<a class="moz-txt-link-freetext" href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a>
</pre>
</blockquote>
</body>
</html>