broken glow plug
The same thing happened to me. The outer part of the GP eventually came out leaving the electrode in the hole. Here's how I got it out. I took the rocker arm off to give me more room to work. I sprayed PB blaster in the hole that the electrode is stuck in and let it sit over night. In my experience this stuff is the best that I've been able to find in the parts stores. Much better than WD-40. The next morning I put a pair of needle nose vice grips on the electrode to ensure that it wouldn't fall into the cylinder. Then I took a long punch and gently tapped the end of the electrode in instead of trying to pull it out. This broke the hold that the carbon had on it. Then I started gently pushing it in and pulling it out while turning it in the hole. Be careful to push and pull straight up and down. You don't want to break it off. I took my time and it came out in one piece. I much prefer finessing it out to torquing on it with pry bars and banging on it with slide hammers. I guess these things have worked at times for others but I wouldn't do that to my truck unless it was a LAST resort. This is the way I look at it. Be as gentle as you can but as firm as you have to be. If that doesn't work and you need to apply force, do so sparingly. If it still won't come out, you only have two choices, work it hard to try and force it out and if it comes out without breaking your in luck. Go buy a lottery ticket! If it breaks when it comes out, you will have to have the heads removed to get it out or it can seriously damage your engine. I've heard of people just putting a new plug in, starting the engine and hoping that it passes. This to me would be like a person passing a baseball sized kidney stone. Ouch!
Good luck and take the time it takes so that it takes less time in the end.
The same thing happened to me. The outer part of the GP eventually came out leaving the electrode in the hole. Here's how I got it out. I took the rocker arm off to give me more room to work. I sprayed PB blaster in the hole that the electrode is stuck in and let it sit over night. In my experience this stuff is the best that I've been able to find in the parts stores. Much better than WD-40. The next morning I put a pair of needle nose vice grips on the electrode to ensure that it wouldn't fall into the cylinder. Then I took a long punch and gently tapped the end of the electrode in instead of trying to pull it out. This broke the hold that the carbon had on it. Then I started gently pushing it in and pulling it out while turning it in the hole. Be careful to push and pull straight up and down. You don't want to break it off. I took my time and it came out in one piece. I much prefer finessing it out to torquing on it with pry bars and banging on it with slide hammers. I guess these things have worked at times for others but I wouldn't do that to my truck unless it was a LAST resort. This is the way I look at it. Be as gentle as you can but as firm as you have to be. If that doesn't work and you need to apply force, do so sparingly. If it still won't come out, you only have two choices, work it hard to try and force it out and if it comes out without breaking your in luck. Go buy a lottery ticket! If it breaks when it comes out, you will have to have the heads removed to get it out or it can seriously damage your engine. I've heard of people just putting a new plug in, starting the engine and hoping that it passes. This to me would be like a person passing a baseball sized kidney stone. Ouch!
Good luck and take the time it takes so that it takes less time in the end.
Great post and welcome FTE.




