smartass Posted June 14, 2011 Share Posted June 14, 2011 Hi, Hope someone can help as i'm running out of ideas! I have a '99 thundercat which starts up fine on all four cylinders. After around 5 minutes or after the bikes warms up I lose cylinder 1 and it mis-fires. I have checked and replaced the following ignition coil 1 & 4 replaced Plugs gapped and changed New Air filter Carb stripped and needle cleaned (head 1). Could it possibly be ECU/CDI Any ideas would be much appreciated. Thanks, Dave Link to comment Share on other sites More sharing options...
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