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Please explain this to me.more popping 428cj
By Greg - 01/06/2002 4:23:33 PM; IP 24.252.182.5
As you'll recall I had the popping cracking 428cj that would idle fine but lay down and pop through the exhaust when under load and part throttle. WELL I replaced the points with a pertronix, replaced the bent pushrod, and checked everything out o.k. Fired it up today and still the cracking popping so I gave it some timing, 18 deg. It was a little better,so if a little is better a lot must be great.. I kept adding timing until it ran fine. The grand total of timing is 26 degrees initial. And it runs great no popping and only a slight bog around the lower rpm range. HOW can this be. Could the previous owner have recurved the dist or degreed the cam to an extent that the engine HATES anything below 20 deg initial advance? I'm gonna need to someone to explain this to me. Maybe I'm stupid.
Thanks
Greg
This thread, so far...
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Collapse <b>Please explain this to me.more popping 428cj</b>&nbsp;-- <font color=#0000ff>Greg, <i>01/06/2002</i></font>Please explain this to me.more popping 428cj -- Greg, 01/06/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10467&Reply=10463><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10467" onclick="return false;">First, how about some info: what's the distributor ID #? [n/m]</a>&nbsp;-- <font color=#0000ff>Mr F, <i>01/06/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10467', contentMargin: 60, icon: $('anchor10467') }); </script>  First, how about some info: what's the distributor ID #? [n/m] -- Mr F, 01/06/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10471&Reply=10463><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10471" onclick="return false;"> 12127 n.m.</a>&nbsp;-- <font color=#0000ff>Greg, <i>01/06/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10471', contentMargin: 60, icon: $('anchor10471') }); </script>   12127 n.m. -- Greg, 01/06/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10475&Reply=10463><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10475" onclick="return false;">You're missing something. Read this first...</a>&nbsp;-- <font color=#0000ff>Mr F, <i>01/06/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10475', contentMargin: 60, icon: $('anchor10475') }); </script>  You're missing something. Read this first... -- Mr F, 01/06/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10478&Reply=10463><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10478" onclick="return false;"> c7AF 8C29 got it .n.m.</a>&nbsp;-- <font color=#0000ff>Greg, <i>01/06/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10478', contentMargin: 60, icon: $('anchor10478') }); </script>   c7AF 8C29 got it .n.m. -- Greg, 01/06/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10484&Reply=10463><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10484" onclick="return false;">For one thing, that's a 390 distributor - not 428CJ. [n/m]</a>&nbsp;-- <font color=#0000ff>Mr F, <i>01/07/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10484', contentMargin: 60, icon: $('anchor10484') }); </script>  For one thing, that's a 390 distributor - not 428CJ. [n/m] -- Mr F, 01/07/2002
 do you think that could be a problem? n.m. -- Greg, 01/07/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10472&Reply=10463><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10472" onclick="return false;">Did you verify....</a>&nbsp;-- <font color=#0000ff>kevin, <i>01/06/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10472', contentMargin: 60, icon: $('anchor10472') }); </script>  Did you verify.... -- kevin, 01/06/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10477&Reply=10463><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10477" onclick="return false;">how would I do that? n.m.</a>&nbsp;-- <font color=#0000ff>Greg, <i>01/06/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10477', contentMargin: 60, icon: $('anchor10477') }); </script>  how would I do that? n.m. -- Greg, 01/06/2002
 Make a piston stop -- Travis Miller, 01/07/2002
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