Mecruiser 120 #4 spark plug is rung in head

[rivins]

The # 4 spark plug is the hardest to get to so I guss no one ever changed it. I have been spraying all types of anticease products but nothing has
worked. I tyred again today and finaly rung it off. The shaft is in the head. Does anyone have any advice? Thanks.

 

[bondo]

Ayuh,... Ya might get Lucky with a good easy-out,...

If not, pull the head, 'n bring it to a Machine Shop...

 

[budgie14]

put lots of grease on the easy out,that way the grease catches hold of any bits of metal that get dislodged.the best easyouts are the straight fluted ones,they dont screw in and expand the bit yr trying to remove.if removing sparkplugs,always use a good socket with a 1/2 inch power bar.makes it easier to undo the initial tightness,then you can use 3/8 inch stuff