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Original Message
But at STARTUP? need some explanation/theory
By Walker - 06/03/2004 11:41:52 AM; IP 216.159.232.26
For example, during startup, the ignition advance is controlled not only by the main advance table, which is set at 18 initial, but also by tables with values determined by the coolant temp sensor and the manifold air temp sensor. Generally, the cooler things are, the more advance is added to the initial value in the main table...real world, working, example, at temps below 0 degrees, 10 degrees of timing advance is added to the initial 18 degrees in the main table (for a total of 28 degrees of initial timing on a cold morning). As the engine warms up, the additional amounts added to the advance gradually drops with the rising temperature to a net 0 add/subtract from the main ignition table.

Basic, fundemental question, I've never seen an answer to: why does a cold engine want so much ignition advance?
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=21694&Reply=21694><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor21694" onclick="return false;">More questions on timing...not answered below</a>&nbsp;-- <font color=#0000ff>Walker, <i>06/02/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=21694', contentMargin: 60, icon: $('anchor21694') }); </script>  More questions on timing...not answered below -- Walker, 06/02/2004
Collapse <a href=../ForumFE/reply.aspx?ID=21698&Reply=21694><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor21698" onclick="return false;">RE: More questions on timing...not answered below</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>06/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=21698', contentMargin: 60, icon: $('anchor21698') }); </script>  RE: More questions on timing...not answered below -- Gerry Proctor, 06/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=21700&Reply=21694><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor21700" onclick="return false;">Why: it's DIS, so 'vacuum advance' is now MAP adv</a>&nbsp;-- <font color=#0000ff>Walker, <i>06/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=21700', contentMargin: 60, icon: $('anchor21700') }); </script>  Why: it's DIS, so 'vacuum advance' is now MAP adv -- Walker, 06/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=21701&Reply=21694><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor21701" onclick="return false;">RE: Why: it's DIS, so 'vacuum advance' is now MAP adv</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>06/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=21701', contentMargin: 60, icon: $('anchor21701') }); </script>  RE: Why: it's DIS, so 'vacuum advance' is now MAP adv -- Gerry Proctor, 06/03/2004
Collapse <b>But at STARTUP? need some explanation/theory</b>&nbsp;-- <font color=#0000ff>Walker, <i>06/03/2004</i></font>But at STARTUP? need some explanation/theory -- Walker, 06/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=21703&Reply=21694><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor21703" onclick="return false;">RE: Now it gets complicated.</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>06/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=21703', contentMargin: 60, icon: $('anchor21703') }); </script>  RE: Now it gets complicated. -- Gerry Proctor, 06/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=21704&Reply=21694><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor21704" onclick="return false;">I thought RETARDING the timing raised temp's</a>&nbsp;-- <font color=#0000ff>Walker, <i>06/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=21704', contentMargin: 60, icon: $('anchor21704') }); </script>  I thought RETARDING the timing raised temp's -- Walker, 06/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=21705&Reply=21694><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor21705" onclick="return false;">RE: We're working many different things.</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>06/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=21705', contentMargin: 60, icon: $('anchor21705') }); </script>  RE: We're working many different things. -- Gerry Proctor, 06/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=21706&Reply=21694><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor21706" onclick="return false;">Still looking for theory on advance timing.</a>&nbsp;-- <font color=#0000ff>Walker, <i>06/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=21706', contentMargin: 60, icon: $('anchor21706') }); </script>  Still looking for theory on advance timing. -- Walker, 06/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=21712&Reply=21694><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor21712" onclick="return false;">RE: Still looking for theory on advance timing.</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>06/04/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=21712', contentMargin: 60, icon: $('anchor21712') }); </script>  RE: Still looking for theory on advance timing. -- Gerry Proctor, 06/04/2004
 I was surprising myself every new cold day... -- Walker, 06/04/2004
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