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RE: Engine starting problem...octane?
By Dave Shoe - 05/02/2001 2:48:17 PM; IP 12.2.11.131
I agree that with a stock distributor cap you don't wanna go past .035" on the plug gap. All the increased gap buys you is higher spark voltage, and the pre-Duraspark cap can't handle much more than a stock voltage before arcing around - especially in high humidity. Keeping the gap stock will allow you to punch through any gasoline mix you can scrounge up, and the MSD amplifier will give you all the plasma energy you want for igniting the fuel-air mix.

As for your starting problem, I can't quite tell whether your "run" ignition current is not working (not likely with the MSD), or your carb's primary circuit is closed off, forcing you to run only on gas from the accelerator pump. Your fuel pump shutdown scenario sounds logical, too.

Whatever your problem, it sounds like a cheap fix, and does not sound like it's octane related.

JMO,
Shoe.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=6229&Reply=6229><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6229" onclick="return false;">Engine starting problem...octane?</a>&nbsp;-- <font color=#0000ff>Katauskas, <i>05/02/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6229', contentMargin: 60, icon: $('anchor6229') }); </script>  Engine starting problem...octane? -- Katauskas, 05/02/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6230&Reply=6229><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6230" onclick="return false;">RE: Engine starting problem...octane?</a>&nbsp;-- <font color=#0000ff>RC Moser, <i>05/02/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6230', contentMargin: 60, icon: $('anchor6230') }); </script>  RE: Engine starting problem...octane? -- RC Moser, 05/02/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6233&Reply=6229><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6233" onclick="return false;">RE: Engine starting problem...octane?</a>&nbsp;-- <font color=#0000ff>Katauskas, <i>05/02/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6233', contentMargin: 60, icon: $('anchor6233') }); </script>  RE: Engine starting problem...octane? -- Katauskas, 05/02/2001
Collapse <b>RE: Engine starting problem...octane?</b>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>05/02/2001</i></font>RE: Engine starting problem...octane? -- Dave Shoe, 05/02/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6236&Reply=6229><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6236" onclick="return false;">RE: Engine starting problem...octane?</a>&nbsp;-- <font color=#0000ff>Katauskas, <i>05/02/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6236', contentMargin: 60, icon: $('anchor6236') }); </script>  RE: Engine starting problem...octane? -- Katauskas, 05/02/2001
 RE: Engine starting problem...octane? -- kevin, 05/02/2001
 I had the same thing happen... -- Will, 05/02/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6253&Reply=6229><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6253" onclick="return false;">RE: sounds electrical.?</a>&nbsp;-- <font color=#0000ff>RC Moser, <i>05/03/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6253', contentMargin: 60, icon: $('anchor6253') }); </script>  RE: sounds electrical.? -- RC Moser, 05/03/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6256&Reply=6229><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6256" onclick="return false;">RE: sounds electrical.?</a>&nbsp;-- <font color=#0000ff>richard, <i>05/03/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6256', contentMargin: 60, icon: $('anchor6256') }); </script>  RE: sounds electrical.? -- richard, 05/03/2001
 RE: sounds electrical.? -- richard, 05/03/2001
 RE: Engine starting problem...octane? -- Bo Fabre, 05/03/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6259&Reply=6229><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6259" onclick="return false;">Another 428 comes back to life!</a>&nbsp;-- <font color=#0000ff>Katauskas, <i>05/03/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6259', contentMargin: 60, icon: $('anchor6259') }); </script>  Another 428 comes back to life! -- Katauskas, 05/03/2001
 RE: Another 428 comes back to life! -- richard, 05/07/2001
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