<div dir="ltr"><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">Bob's advice includes some excellent tips but one problem that I have encountered numerous times that causes the idle speed of a car with SU carbs to decrease until the engine stops is leakage of the float chamber needle valves.<br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">Oddly these valves will frequently only leak when the engine is actually running as there is no overflow from the float chambers when the ignition is left on with the engine not running.<br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">I have discovered that if you quickly remove the carb dampers and needles as soon as the engine stops fuel will be found to be leaking out of the main jet. <br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">I suspect that engine vibration causes the needle valves to leak sometimes. <br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">In the past I used to solve the problem by installing the type of needle valve with the synthetic rubber tips but those are hard to find these days.<br><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">Michael S<br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small">BN1 #174 <br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Sep 29, 2016 at 8:11 PM, Gil Rockwell <span dir="ltr"><<a href="mailto:gilrockwell@gmail.com" target="_blank">gilrockwell@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="blue" vlink="purple" lang="EN-US"><div class="m_5602261947938735076WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I’ve used WD-40 in the past to find intake leaks with great success. Safer than brake cleaner or brake fluid….<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><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""> Healeys [mailto:<a href="mailto:healeys-bounces@autox.team.net" target="_blank">healeys-bounces@autox.<wbr>team.net</a>] <b>On Behalf Of </b>i erbs<br><b>Sent:</b> Thursday, September 29, 2016 1:40 PM<br><b>To:</b> Bob Spidell<br><b>Cc:</b> healeys<br><b>Subject:</b> Re: [Healeys] car dies at idle<u></u><u></u></span></p><span class=""><p class="MsoNormal"><u></u> <u></u></p><div><p class="MsoNormal">sorry meant to say brake cleaner. Dot 5 strips paint.<u></u><u></u></p></div><div><p class="MsoNormal"><br clear="all"><u></u><u></u></p><div><div><div><div><div><div><div><div><div><div><p class="MsoNormal">Ira Erbs<u></u><u></u></p><div><p class="MsoNormal">Portland,OR<u></u><u></u></p></div><div><p class="MsoNormal"> _______ _______<br> (______ \____1959 BN4____/ _______)<br> (_________________________)<u></u><u></u></p></div><div><p class="MsoNormal"> BT7 engine and disk brakes<u></u><u></u></p></div></div></div></div></div></div></div></div></div></div></div></div></span></div><br>
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<br></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><i><font size="2"><span style="color:black">If you can't fix it with a hammer, you've got an electrical problem.</span></font></i><br><br><div></div><div></div><div></div></div></div></div></div>
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