Fx1 - Spark plug stuck

Location
Tampa, FL
Hello, As the title says. I don't know if I over tightened them or what. I was able to remove one of the plugs with a bit of help from a wrench. however the other one is not budging. with some pressure I can get it to twist both Right/Left. however the plug is not actually moving. The threading bolt it's attached to is rotating along with it. I've thrown some lubricant in hopes that can free it a bit. Any other ideas?
 
Location
Tampa, FL
hey all, im a bit stuck. I've taken the head off. how do i remove this now?
 

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Location
Tampa, FL
Pop the dome down. The chuck up in a vice. Use pads to keep from damaging the dome.

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I was able to get the plug out. now when installing it back it still turns freely. I imagine it's not supposed to do this. is this a faulty dome or am I doing something wrong?
 
the head is just worn out. where the dome contacts the shell and cylinder deck, that's where wear happens. eventually the clearances get loose and the dome spins when you try and remove the plug. ADA heads are famous for that and then they blow O-rings faster. I've got a few heads that I was going to have a couple thousandths milled off the shell and that will tighten the clearances back up. I use an air impact gun to remove plugs from spinning domes.
 
Location
Tampa, FL
Hmm, well I have been completely unsuccessful at getting that plug out. Looks like i'll have to buy a new dome for it.
  1. Is it okay to only replace one dome vs both?
  2. Also, how do i know which size dome i should get? After reading a few other articles it look like it's based on your geographical area of riding based on sea level. With me being in Florida, I believe i saw i should get a 35cc

Thanks again for the help!
 

Big Kahuna

Administrator
Location
Tuscaloosa, AL
Good luck finding domes. They are rare. Might be better off finding a new head. Check with Jetmaniac, Chris had some reduced priced heads last week.
 
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