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backfiring 428 cj
By Greg - 01/02/2002 8:21:34 PM; IP 24.252.182.5
Need help badly. All of the sudden my '69 machI 428 cj.backfires like crazy. It will idle pretty well but under anything other than the lightest throttle or load it lays down drastically and pops and crack through the exhaust. I've checked the plug wires and the firing order very carefully and they're correct. I've adjusted the timing from 10 btdc to 30btdc. and the backfiring is worse the lower it goes. I've checked fuel flow and it seems o.k. too.
Any ideas would be greatly appreciated.
Greg
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Collapse <b>backfiring 428 cj</b>&nbsp;-- <font color=#0000ff>Greg, <i>01/02/2002</i></font>backfiring 428 cj -- Greg, 01/02/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10383&Reply=10381><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10383" onclick="return false;">RE: backfiring 428 cj</a>&nbsp;-- <font color=#0000ff>Tim B, <i>01/02/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10383', contentMargin: 60, icon: $('anchor10383') }); </script>  RE: backfiring 428 cj -- Tim B, 01/02/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10384&Reply=10381><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10384" onclick="return false;">RE: backfiring 428 cj</a>&nbsp;-- <font color=#0000ff>Greg, <i>01/02/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10384', contentMargin: 60, icon: $('anchor10384') }); </script>  RE: backfiring 428 cj -- Greg, 01/02/2002
 RE: backfiring 428 cj -- Davy Gurley, 01/02/2002
 Check the compression. -- Dave Shoe, 01/02/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10390&Reply=10381><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10390" onclick="return false;">RE: backfiring 428 cj</a>&nbsp;-- <font color=#0000ff>Ross, <i>01/03/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10390', contentMargin: 60, icon: $('anchor10390') }); </script>  RE: backfiring 428 cj -- Ross, 01/03/2002
 Check for sticking advance plate too... -- Bill Conley, 01/03/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10394&Reply=10381><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10394" onclick="return false;"> another update.....</a>&nbsp;-- <font color=#0000ff>Greg, <i>01/03/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10394', contentMargin: 60, icon: $('anchor10394') }); </script>   another update..... -- Greg, 01/03/2002
 Thoughts to Ponder -- John, 01/03/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10400&Reply=10381><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10400" onclick="return false;">Compression test results</a>&nbsp;-- <font color=#0000ff>Greg, <i>01/03/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10400', contentMargin: 60, icon: $('anchor10400') }); </script>  Compression test results -- Greg, 01/03/2002
Collapse <a href=../ForumFE/reply.aspx?ID=10406&Reply=10381><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor10406" onclick="return false;">RE: Compression test results</a>&nbsp;-- <font color=#0000ff>John, <i>01/03/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=10406', contentMargin: 60, icon: $('anchor10406') }); </script>  RE: Compression test results -- John, 01/03/2002
 RE: Compression test results -- salid, 01/05/2002
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