This is good/bad, I have never seen this before.
Neighbors 1994 Pontiac Grand Am, 230K miles. 3.1 V6.
I went to do a tune up this afternoon, and as some times happens, I broke a
spark plug trying to remove it from its 230K mile home. But this spark plug
brok in a manner that I had never seen. The nut portion, along with the
inner electrode came separated from the threaded portion. It is as if the
plug unscrewed from itself....(it is a STOCK AC delco plug, that the owner
thinks have NEVER been replaced...and compared to the others that I took
out...I am amazed this car ran as well as it did..)
the dilemma, is that it is the cylinder right in front of the AC components
on the fire wall. I can get more room to get to it when I remove the
alternator...but clearance to the firewall is only about 6-8 inches.
OK...once I get to it, it has to come out. I have a #5 screw extractor, BUT
I am afraid to shear it off in the hole that is left in the center of the
plug. I can only see the hole with a mirror, and it looks to be about a 1/2
Anyone got any suggestions that would possibly prevent the head removal, and
subsequent trip to the machine shop??