My car was idling a little rough Sat so I checked the plugs and part of the ceramic around the plug had cracked off!

I replaced the plug and the car runs better, is this a HUGE problem?

I've read about lose plugs and cracked plugs and folks having to get the block replaced....should I worry?

 

What part of the plug was broken? The part inside or outside the head?

 

inside the head

 

Did the whole piece break off, or just a small part? I haven't had this happen to me, so I'm only guessing... A with a small piece, you could be lucky and not have any damage. Since your engine is running well now, there was no catastrophic damage. To check for cylinder wall scoring you could get a compression test and/or a leak down test.

 

it was a piece of it close to the center electrode or whatever that is. It was maybe half an inch long and 1/8 of an inch wide. I do get a little popping in the exhaust between shifts that I don't remember.

I just am hoping that I don't have the gregsteven's problem. Two honda dealers thought detonation?? I guess I should have the compression checked.

 

I hope all goes well. It sounds like everybody likes Jim Coleman Honda, maybe you could take it there. I had a mechanic around the corner that really knew his stuff, but his partner screwed him and he had to sell his shop and I don't know where he is now.