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<font size="+1"><tt>A couple of questions:<br>
<br>
Are these new carbs or used and have you verified the same jets
and chokes on each?<br>
<br>
Is that black coating something you painted on or is it
something that might have required some sort of dipping process
(maybe partially clogging a passage)?<br>
<br>
Have you verified that the carb mounts do not have an air leak?
Your #3 might have an air leak at the base.<br>
<br>
2500 -3000 RPM is the RPM range where the idle circuit is
transitioning to the progression circuit. Your idle jet size
and mixture screw adjustment may be giving you a lean condition
as you are transitioning between the idle circuit and
progression circuit. And also check to see that your
progression holes are open.<br>
<br>
TeriAnn<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.tr3a.info/WeberDCOEinfo.htm">http://www.tr3a.info/WeberDCOEinfo.htm</a><br>
<br>
</tt></font><br>
<div class="moz-cite-prefix">On 5/3/15 11:40 AM, Jim Gray via Fot
wrote:<br>
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<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">I just installed my webers and I’m
running into
something not covered in anything I’ve read so far.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">At cruise speed which I do on the
street, 2500 -3000
RPM my exhaust gas temps on # 4 are 100 plus degrees<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">over # 1and will climb to 1400 if I
stay at that throttle
setting. Under wide open throttle they equalize and seem<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">to settle in at about 1300.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">However, I think this may be
symptomatic of my other issue.
When I’m tuning the idle air screws, open them up until<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">it starts to miss & so on, I can
get a predictable
stumble from three out of the four screws.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">The screw on # 3 has no effect on the
idle no matter how far
I run it in or out.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">Also , when I put my syncrometers on
#’s 3 and 4 they
are significantly different.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">I’m not going to get my dyno tune
before the first
race in two weeks so I’m left to figure it out on my own
for now.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">Any help would be greatly appreciated,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">Jim g<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial"><img id="_x0000_i1025"
src="cid:part1.04060904.09010808@gmail.com" width="627"
height="627"><o:p></o:p></span></font></p>
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