Hey. I have a 2000 CBR F4 and am trying to change the spark plugs but they won't budge. Any ideas on how to safely remove spark plugs that are on too tight? I really don't wanna have to take it to the shop and spend a fortune since I already took everything apart myself. Thanks...

 

Your using a wrench in combination with the spark plug tool right?

 

I would agree with Nauree, you probably just need a bigger wrench. About the only other thing would be if they got cross-threaded somehow, but then your gonna be in deep *&$# anyhow. If you think they could be contaminated at all from something you could spray a little pb blaster down the holes and let sit overnight, but i doubt thats your problem.

 

uh oh...yea pb it...
usually plugs don't seize on aluminum heads...they do cross thread pretty good though...

 

pb it def! that stuffs awesome! Next time you put new plugs in, put some antiseize goo on the threads..it works wonders