#4 spark plug woes...

The head for the plug is downstream of the ceramic body and should be alright. You kinda have to get the plug out anyhow. Perhaps some PB would help. Be sure to neverseize the new plugs before installation.

Good luck.

it normally cracks from not using a spark plug socket....the kind that has the little rubber inside....when u dont have the rubber inside when u tighten it, the torgue you push on it makes the plug touch the inside of the socket and put a lot of pressure on it and make it crack..i can do those plugs in about 5 minutes on mine....it would be cake if u took out the rubber smog lines...thats what makes it so hard, from what i remember anyways.

I have completely broken off the ceramic from a plug and still been able to get the plug out of the head. As JT mentioned, the surface that the socket turns against is down stream of the ceramic. What I do, now, is load the plug socket on the plug and turn as I push down. This way I can feel with my hand when it catches on the correct spot. Then just make sure the socket is seated good. Attach a short extentsion (1/2" maybe) and your ratchet for removal.

Wear some gloves so your car can't draw any blood.