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Original Message
I suspect a leaking intake manifold, not a gasket.
By Dave Shoe - 09/16/2002 11:42:45 PM; IP 67.4.132.31
If the leak was at an intake gasket, there would be lots of smoke being drawn in from the crankcase.

On the other hand, it's possible the intake gasket is leaking between the heat crossover port near the #7 cylinder and the intake, but I doubt it if all else is sealed.

More likely a teensy hole has developed in the intake manifold between the heat crossover and the #7 runner. A small amount of exhaust gas is being recirculated to the #7 cylinder, causing it to run lean. The leak is likely within two inches of the head on the underside of the intake. But now I'm speculating.

JMO,
Shoe.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=14432&Reply=14432><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor14432" onclick="return false;">#7 Sparkplug too hot</a>&nbsp;-- <font color=#0000ff>John, <i>09/15/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=14432', contentMargin: 60, icon: $('anchor14432') }); </script>  #7 Sparkplug too hot -- John, 09/15/2002
Collapse <a href=../ForumFE/reply.aspx?ID=14436&Reply=14432><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor14436" onclick="return false;">Uh-oh...might just be extra-lean, in that cylinder. [n/m]</a>&nbsp;-- <font color=#0000ff>Mr F, <i>09/15/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=14436', contentMargin: 60, icon: $('anchor14436') }); </script>  Uh-oh...might just be extra-lean, in that cylinder. [n/m] -- Mr F, 09/15/2002
Collapse <a href=../ForumFE/reply.aspx?ID=14444&Reply=14432><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor14444" onclick="return false;">RE: Uh-oh...might just be extra-lean, in that cylinder. [n/m]</a>&nbsp;-- <font color=#0000ff>John, <i>09/16/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=14444', contentMargin: 60, icon: $('anchor14444') }); </script>  RE: Uh-oh...might just be extra-lean, in that cylinder. [n/m] -- John, 09/16/2002
Collapse <a href=../ForumFE/reply.aspx?ID=14445&Reply=14432><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor14445" onclick="return false;">Mr F. is right, look for a vacuum leak that.....</a>&nbsp;-- <font color=#0000ff>hawkrod, <i>09/16/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=14445', contentMargin: 60, icon: $('anchor14445') }); </script>  Mr F. is right, look for a vacuum leak that..... -- hawkrod, 09/16/2002
Collapse <a href=../ForumFE/reply.aspx?ID=14449&Reply=14432><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor14449" onclick="return false;">Fel=Pro strickes again...maybe</a>&nbsp;-- <font color=#0000ff>John, <i>09/16/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=14449', contentMargin: 60, icon: $('anchor14449') }); </script>  Fel=Pro strickes again...maybe -- John, 09/16/2002
Collapse <b>I suspect a leaking intake manifold, not a gasket.</b>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>09/16/2002</i></font>I suspect a leaking intake manifold, not a gasket. -- Dave Shoe, 09/16/2002
Collapse <a href=../ForumFE/reply.aspx?ID=14483&Reply=14432><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor14483" onclick="return false;">Oh-Oh............</a>&nbsp;-- <font color=#0000ff>John, <i>09/17/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=14483', contentMargin: 60, icon: $('anchor14483') }); </script>  Oh-Oh............ -- John, 09/17/2002
Collapse <a href=../ForumFE/reply.aspx?ID=14489&Reply=14432><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor14489" onclick="return false;">I hate to have you remove the intake on my account</a>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>09/17/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=14489', contentMargin: 60, icon: $('anchor14489') }); </script>  I hate to have you remove the intake on my account -- Dave Shoe, 09/17/2002
Collapse <a href=../ForumFE/reply.aspx?ID=14492&Reply=14432><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor14492" onclick="return false;">Already have, and ....</a>&nbsp;-- <font color=#0000ff>John, <i>09/17/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=14492', contentMargin: 60, icon: $('anchor14492') }); </script>  Already have, and .... -- John, 09/17/2002
 Probably not what you meant, but still helpful... -- Mr F, 09/17/2002
 As hawkrod explained, a leak's your best bet. [n/m] -- Mr F, 09/16/2002
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