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Old 02-19-2007, 06:26 AM
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60wag 60wag is offline
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Join Date: Aug 2005
Posts: 2,023

The intake valve on #5 is either bent or has something caught in it. I'm with Steve on this - pull the head. It could be a chunk of a broken spark plug or something that got sucked in through the intake manifold. I vagely remember a Mud thread about some bolt in the carb coming loose and ending up in a cylinder. This might be similar.
'03 KTM 450EXC
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