i was riding my 02 cbr f4i 600 and the bike started to make a funny noise and lost some power. when i finally got the bike home i found the spark plug wire was popped out and free moving and when i pulled it out the spark plug was still in the boot. has anyone ever had this happen to them. im thinking that im going to either have to get a new head or have some work done to the head.

 

did the plug work its way loose and then out or did it strip the threads out?

 

never heard of this on a bike, but on mustangs they have spark plug blow outs all the time....and its a fairly easy fix. Normally its caused by the plug not being tightened or cross threaded.

 

the plug stripped out. i tryed pulling it back in when i got home but it just came right out. i found a used motor for it for 500 bucks with less miles. i think that will be cheaper then pulling the motor and taking the head off and sending it out to get fixed