<div dir="ltr"><div>Harry - Another possibility is that the needle has become disengaged from the adjusting screw and is no longer moving when you turn the screw. When this happens, the needle is left in the full-lean position and no amount of turning the adjusting screw will change it. The adjustment is a bit counter-intuitive in that to enrich the mixture, you turn the adjusting screw clockwise, and to lean out the mixture, you turn the screw counter clockwise. If you were turning the screw counter clockwise in an attempt to enrich the mixture, the needle may have fallen off the screw. </div><div><br></div><div>The way to tell if the needle and screw are still engaged is to turn the screw clockwise. Eventually, it should bottom out and stop turning (envision a screw 1" long being screwed into a threaded hole 1/2" deep). To re-engage a needle that has fallen off, put some slight pressure on the needle pushing it back towards the piston while turning the adjusting screw clockwise.</div><div><br></div><div>Hope this helps,</div><div>Mike Burdick</div><div>Durham, NC</div><div> </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 6, 2016 at 8:17 AM, <span dir="ltr"><<a href="mailto:Harrymague@aol.com" target="_blank">Harrymague@aol.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
<div style="color:rgb(0,0,0);font-family:Arial;font-size:10pt"><font color="#000000" face="Arial" size="2">
<div>After doing some engine work, I notice that one of the cards had a small
leak. I replaced the bottom float seal. I doing so, I notice that
the float value appeared to be sticking so I replaced it. I check the
float level and it appeared to be the 16-17 mm tolerance listed. I
reinstalled the carb and noticed that the engine was running a
little rough. I used my ColorTune. It showed the carb was
running lean. I attempted to adjust the mixture but could not get the carb
to run any richer. My question is: if the float was not adjusted
correctly, making the level of fuel in the bowl low, could this cause my
inability to adjust the mixture rich??</div>
<div>Thanks in advance for any suggestion.</div>
<div>Harry Mague</div>
<div>Beavercreek, OH</div>
<div>1973 1/2 TR6 </div></font></div><br><br>
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