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2013-14 Shelby GT500
Misfiring and now no compression
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<blockquote data-quote="Snoopy49" data-source="post: 13042093" data-attributes="member: 138649"><p>If it were running lean, wouldn't the porcelain insulator be white and the center electrode rounded on the end? As far as the ground electrode, it may have been damaged before installation or by contact with something in the combustion chamber.</p><p></p><p>The lack of compression in that cylinder may be a result of the broken spark plug piece getting caught between the outside edge of the piston and the cylinder head. This would cause the ring land to collapse and pin the top ring in the ring land.</p></blockquote><p></p>
[QUOTE="Snoopy49, post: 13042093, member: 138649"] If it were running lean, wouldn't the porcelain insulator be white and the center electrode rounded on the end? As far as the ground electrode, it may have been damaged before installation or by contact with something in the combustion chamber. The lack of compression in that cylinder may be a result of the broken spark plug piece getting caught between the outside edge of the piston and the cylinder head. This would cause the ring land to collapse and pin the top ring in the ring land. [/QUOTE]
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2013-14 Shelby GT500
Misfiring and now no compression
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