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Hi Andrew,<div><br></div><div><br></div><div>If you have fuel pressure, it almost sounds like a coil getting hot and failing. Working again when it cools off. What are you running for ignition? I’ve also had a pertronix do the same thing…</div><div><br></div><div><br></div><div>A wise man once told me 90% of carb problems are ignition (and vice versa). Haha. You know who you are… I could we way off base….</div><div><br></div><div>Dave Gott<br><br><br><div class="yahoo-signature"><a style="font-size:12px" href="https://mail.onelink.me/107872968?pid=nativeplacement&c=Global_Acquisition_YMktg_315_Internal_EmailSignature&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000604&af_sub5=EmailSignature__Static_">Sent from Yahoo Mail for iPhone</a><br></div><br><p class="yahoo-quoted-begin" style="font-size: 15px; color: rgb(132, 115, 255); padding-top: 15px; margin-top: 0px;">On Friday, August 9, 2024, 2:52 PM, Andrew Devenish via Fot <fot@autox.team.net> wrote:</p><blockquote class="iosymail"><div dir="ltr">Guys, <br clear="none"> My car ( 1300, 12.5:1 comp on Sunoco 110 race gas, dual HS4 ) is still giving me grief. I’ve chased all the things I can think of, but still same problem. It starts and runs great, but after a few laps of the yard ( 5-6, only 1000ft or so per up/down lap, so quick accels then braking to turn ) it goes very lean ( I have O2 sensor ) and stops. I’m running it without the hood for these test runs. It always stops at the entry to a turn. <br clear="none"> I’ve been working on it a lot, so know it has fuel pressure, and the float bowls are full of fuel. All plugs look very similar. The needles (AAA) are the spring type, and the slides move freely. I use ATF as fluid, but have tried 50 weight too.<br clear="none"> After a minute or so it will fire back up, but only run enough to get back to the shop before going lean again. If I pull out the choke it will run, but is unstable. <br clear="none"> I have wrapped headers and a heat shield around the carbs but they do still get hot.<br clear="none"><br clear="none"> Any ideas ? Thinking to try some less volatile fuel as it seems heat related and the Sunoco evaporates so fast !<br clear="none"> <br clear="none"><br clear="none">Thank you, <br clear="none"> Andrew Devenish<br clear="none"><br clear="none">Sent from my iPad</div><div class="yqt8722234662" id="yqtfd09024">_______________________________________________<br clear="none"><a shape="rect" ymailto="mailto:fot@autox.team.net" href="mailto:fot@autox.team.net">fot@autox.team.net</a><br clear="none"><br clear="none"><a shape="rect" href="http://www.fot-racing.com" target="_blank">http://www.fot-racing.com</a><br clear="none"><br clear="none">Donate: <a shape="rect" href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br clear="none">Archive: <a shape="rect" href="http://autox.team.net/archive" target="_blank">http://autox.team.net/archive</a> <a shape="rect" href="http://www.team.net/pipermail/fot" target="_blank">http://www.team.net/pipermail/fot</a><br clear="none">Unsubscribe/Manage: <a shape="rect" href="http://autox.team.net/mailman/options/fot/triumphsix@yahoo.com" target="_blank">http://autox.team.net/mailman/options/fot/triumphsix@yahoo.com</a><br clear="none"><br clear="none"><br clear="none"></div><blockquote></blockquote></blockquote></div>
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