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Original Message
Royce is probably right
By John - 11/06/2005 8:46:15 AM; IP 142.177.41.80
Well.....the engine runs great (acceleration, cruising), and the plugs all look equal, so I am discounting engine damage for now. As I mentioned before, I used to have this backfiring out of exhaust when the ignition was weak (dirty points leading to misfire under overly rich condition when taking foot off of gas), but upon finding a header pipe loose on the side having the trouble, I figured that was it. Truth is, my ignition is barely adequate, but it does work. Prior to throwing money at it (MSD, etc.) I want to know where the problem is now. Once I find out my current weak link, then I can upgrade with....er......"dignity"....LOL. So, I suspect I am back to troubleshooting the ignition for now, and Royce is likely right. No doubt with a major ignition upgrade, I would have far fewer troubles. It seems like the slightest degredation of any ignition component, shows itself all too easily the way it is now.

ps: I did the midnight test to see if the wires were bad. The odd spark jumped from the coil wire to the coil + post, but very infrequently. Bears further investigation though as my exhaust "popping" is limited to one side. Perhaps an indication that the wires are passing their useful life.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=25994&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor25994" onclick="return false;">Spark plugs for my 428?</a>&nbsp;-- <font color=#0000ff>John, <i>10/16/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=25994', contentMargin: 60, icon: $('anchor25994') }); </script>  Spark plugs for my 428? -- John, 10/16/2005
Collapse <a href=../ForumFE/reply.aspx?ID=25995&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor25995" onclick="return false;">Colder plugs foul quicker. Go the other way. N/M</a>&nbsp;-- <font color=#0000ff>Royce P, <i>10/16/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=25995', contentMargin: 60, icon: $('anchor25995') }); </script>  Colder plugs foul quicker. Go the other way. N/M -- Royce P, 10/16/2005
Collapse <a href=../ForumFE/reply.aspx?ID=25997&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor25997" onclick="return false;">True, but.....?</a>&nbsp;-- <font color=#0000ff>John, <i>10/16/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=25997', contentMargin: 60, icon: $('anchor25997') }); </script>  True, but.....? -- John, 10/16/2005
Collapse <a href=../ForumFE/reply.aspx?ID=26004&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor26004" onclick="return false;">Rf12yc</a>&nbsp;-- <font color=#0000ff>Cobra428, <i>10/17/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=26004', contentMargin: 60, icon: $('anchor26004') }); </script>  Rf12yc -- Cobra428, 10/17/2005
Collapse <a href=../ForumFE/reply.aspx?ID=26005&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor26005" onclick="return false;">RE: Rf12yc</a>&nbsp;-- <font color=#0000ff>John, <i>10/17/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=26005', contentMargin: 60, icon: $('anchor26005') }); </script>  RE: Rf12yc -- John, 10/17/2005
Collapse <a href=../ForumFE/reply.aspx?ID=26006&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor26006" onclick="return false;">Just wondering what type ignition you have.</a>&nbsp;-- <font color=#0000ff>Royce P, <i>10/17/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=26006', contentMargin: 60, icon: $('anchor26006') }); </script>  Just wondering what type ignition you have. -- Royce P, 10/17/2005
Collapse <a href=../ForumFE/reply.aspx?ID=26008&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor26008" onclick="return false;">My Ignition</a>&nbsp;-- <font color=#0000ff>John, <i>10/17/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=26008', contentMargin: 60, icon: $('anchor26008') }); </script>  My Ignition -- John, 10/17/2005
Collapse <a href=../ForumFE/reply.aspx?ID=26009&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor26009" onclick="return false;">RE: My Ignition</a>&nbsp;-- <font color=#0000ff>Royce P, <i>10/17/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=26009', contentMargin: 60, icon: $('anchor26009') }); </script>  RE: My Ignition -- Royce P, 10/17/2005
Collapse <a href=../ForumFE/reply.aspx?ID=26063&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor26063" onclick="return false;">Ah hah!...something unexpected</a>&nbsp;-- <font color=#0000ff>John, <i>11/01/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=26063', contentMargin: 60, icon: $('anchor26063') }); </script>  Ah hah!...something unexpected -- John, 11/01/2005
 Well....phooey! -- John, 11/03/2005
Collapse <a href=../ForumFE/reply.aspx?ID=26081&Reply=25994><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor26081" onclick="return false;">RE: Ah hah!...something unexpected</a>&nbsp;-- <font color=#0000ff>walt, <i>11/05/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=26081', contentMargin: 60, icon: $('anchor26081') }); </script>  RE: Ah hah!...something unexpected -- walt, 11/05/2005
Royce is probably right -- John, 11/06/2005
 RE: Spark plugs for my 428? -- walt, 11/02/2005
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