I started hearing a skip at idle as well as slight detonation under aggresive acceleration. It only took hearing this once for me to recognize that something was wrong. I done a plug change today and went back to NGK TR6"s. I found one of my Brisk plugs had a broken off insulator!!! The SCARY part is, wheres the rest of the insulator? I've attached a link with pics. These plugs only had 2000 miles on them!!

http://public.fotki.com/jster171/lightning/

 

Most likely it made it past the exhaust valve and is sitting on your cat.

Rich

 

Man I hope so. I tried my best with a mirror and flashlight to look down in the cylinder, but I couldnt see anything. I then used my airhose gun to try and blow anything out that might be in there. I even spun the motor over to try and blow anything out that might be in there. NOTHING!!! Hopefully its gone, like you say?

 

If it was still there... you'd know it!

I once had two little nuts fall off a throttle plate in a carburator. Believe me... you'd know if it was still there!

Rich

 

Not always true on the youl'd know it thing. I had a piece of elctrode stay stuck on the top of one of my pistons. After I changed the plugs I did a compression test all was well so I thought. When it came loose it made a gouge in the side of the cylinder.

 

Was it a Brisk also?