I decided to take the advice of some folks on this forum and have my glow plugs changed since I already had the intake removed to fix a fuel leak. My engine has approximately 204k miles and to my knowledge the glow plugs have only been changed once back when she only had around 40k miles on her. In the past my glow plug relay had misbehaved some. The glow plug light would not turn off after the engine started. This would only happen occasionally and at random. Every time it happened I would shut off the engine and restart it. This always fixed the problem. There were a few times that I did not notice that the light hadn't turned off for a little while and I would pull off the road and shut the engine off and restart it. I decided I better replace the relay while I was replacing the plugs. I entrusted a friend of mine who is a big engine/truck diesel mechanic to do the work. He broke one of the plugs off when he was trying to remove it and he suggested that I take the car to an INDY shop to finish the job because he didn't have an extractor for that small size glow plug. I took the car to the INDY shop, who has done work on my car in the past, and they do great work. The indy shop called and said they were having a very hard time getting some of the plugs out and they actually broke their extractor tool trying to remove one of my plugs. The indy mechanic did not sound too happy about that. He got another extractor tool and successfully removed and replaced plugs 1-5. On plug 6 (the back plug) he told me he was having a very difficult time and was going to have to remove the oil filter housing to extract the plug. He did just this and has not successfully extracted plug 6 yet. He said he cannot drill into the broken #6 plug any deeper because he doesn't want to risk getting too close to the head. He reinstalled the oil filter housing and has been running the engine all day and he says the the broken plug will eventually shoot out. Does this sound possible? Has anyone ever had an experience like this and if so do you have any possible tricks you can suggest? Any advice will be greatly appreciated. Thank you

__________________
2006 E320CDI- current dd
1999 E300TD - retired
Wilmington, NC USA