How do I remove a broken glow plug from 6.2 diesel

[gem1410]

Got my humvee from gov planet as a non runner-----Have a glow plug that is broken off deep in the bottom of the threads--I started the engine and at first it had a big compression leak and then the leak closed up--So I figure the element of the plug is still intact--lucky---any ideas how to get the plug out of the threads----------I also have one plug that will not move--stuck in the threads--any tricks to loosen it up----thanks George

 

[cajadao]

hi.
found it on youtube.
even though they want to sell the kit. it gives us a good idea of the labor involved.
https://www.youtube.com/watch?v=ee6sfgIhfT4

 

[gem1410]

thanks for the work-------better then the ones I found

 

[germanrifle]

none of that crap will fit anywhere in the 6.2 compartment.

 

[cajadao]

how about leroy diesel's $100 tool?
http://leroydiesel.com/products/leroys-glow-plug-removal-tool/
and if the rod comes broken at the end, there is a chance to get it from the injection port.

 

[NormB]

none of that crap will fit anywhere in the 6.2 compartment.

Always with the negative waves.

 

[cajadao]

How about leroy diesel's $ 100 tool?
If the rod's end come out broken, there is a chance to retrieve it from the injection port.

Doable?

http://leroydiesel.com/products/leroys-glow-plug-removal-tool/

 

[gem1410]

Positive info is always good-----the video is very good----I think looking at the video I will remove the injector and lightly tap the remains of the plug into the cylinder---then pick it out---will get the piston up first

 

[germanrifle]

I would not want any metal on my piston or in the cylinder.

 

[Awol]

Positive info is always good-----the video is very good----I think looking at the video I will remove the injector and lightly tap the remains of the plug into the cylinder---then pick it out---will get the piston up first

I've seen it done this way, especially with swollen glow plugs that break upon removal. Just be extra sure that you got every little piece of metal out of the cylinder before starting!

 

[dilvoy]

It will fall into the pre chamber not the cylinder. You need get some shop manuals from various sources so you can learn about how your engine is designed yourself. Internet info might cost you lots of money in repair bills, because you followed bad advise from someone who also doesn't know the systems of this vehicle.

 

[gem1410]

thanks--i will look into info on the pre chamber----that is good info

 

[AFGVET]

Gem1410,
Back a while ago (2017) you had this issue (broken glow plug tip fell out of the Glow Plug hole.

Well here in 2020 I have the same issue.
How did you correct yours?
Was it in the Pre-Chamber?

With some shame, I can tell you what I have done.
So I followed some advice...
A guy on the internet (GD internet!) suggested that I "bump" the engine a few times and it would just "blow out."
Yeah, a funny thing, it didn't. That piston also sucks in... I didn't consider that (stupid, I should have know better.) Now I am afraid its in the combustion chamber.

So how did yours end up...

 

[gem1410]

Gem1410,
Back a while ago (2017) you had this issue (broken glow plug tip fell out of the Glow Plug hole.

Well here in 2020 I have the same issue.
How did you correct yours?
Was it in the Pre-Chamber?

With some shame, I can tell you what I have done.
So I followed some advice...
A guy on the internet (GD internet!) suggested that I "bump" the engine a few times and it would just "blow out."
Yeah, a funny thing, it didn't. That piston also sucks in... I didn't consider that (stupid, I should have know better.) Now I am afraid its in the combustion chamber.

So how did yours end up...

 

[gem1410]

I pulled the injector and I think the tip was sitting on top of the piston--I used a harbor freight borescope to see in there--I used long,thin needle pliers to pull it out--Had another tip that broke off in the and got it out same way--injectors come out easy

 

[AFGVET]

Gem,
WOW, that was an Ultra-fast response.
Happy Easter and Thank you.

I will try that that.

I have another broken plug tip that is still lodged in the glow plug "port?"
I was thinking of two COAs
1. hand cranking that cylinder to BDC and then "bumping" it in hopes it shoots out (yeah same bad idea from before)
2. taking the injector out and then knocking the broken tip into the Pre-Chamber (after I block the port to the cylinder chamber with cotton, then grabbing it.
I am leaning to COA 2.

Your thoughts?

 

[gem1410]

Gem,
WOW, that was an Ultra-fast response.
Thank you.

I will try that that.

I have another broken plug tip that is still lodged in the glow plug "port?"
I was thinking of two COAs
1. hand cranking that cylinder to BDC and then "bumping" it in hopes it shoots out (yeah same bad idea from before)
2. taking the injector out and then knocking the broken tip into the Pre-Chamber (after I block the port to the cylinder chamber with cotton, then grabbing it.
I am leaning to COA 2.

Your thoughts?

I had a few of them--I remove the injector and I remember i could see the tip --put the needle nose on the tip and poke it free --I think i used a skinny Philips head screw driver and knocked the tip through the glow plug hole with soft blows with a hammer--no mystery--

 

[MarkM]

As stated the busted tip will fall into the pre-cup and shouldn't make it into the cylinder. If the tip breaks off the military just replace the glow plug and don't bother going after the busted tips. I have had a few busted tips and went after them. One great tip I got on this site was to stuff some cotton under the tip still lodged in the glow plug port and it makes it so much easier to grab. I picked up a cheap set of needle nose pliers and bent them up to reach in the injector hole to fish out the tip. Put some copper never seize on the threads of the new plugs and don't put them in too tight. Hope this helps.

Mark

 

[AFGVET]

Gentlemen,
Thank you for sharing your experience and the developed TTPs.
Especially sharing them on a holiday (Happy Easter).

My melancholy over this predicament is greatly dispelled!

 

[Mogman]

Gem1410,
Back a while ago (2017) you had this issue (broken glow plug tip fell out of the Glow Plug hole.

Well here in 2020 I have the same issue.
How did you correct yours?
Was it in the Pre-Chamber?

With some shame, I can tell you what I have done.
So I followed some advice...
A guy on the internet (GD internet!) suggested that I "bump" the engine a few times and it would just "blow out."
Yeah, a funny thing, it didn't. That piston also sucks in... I didn't consider that (stupid, I should have know better.) Now I am afraid its in the combustion chamber.

So how did yours end up...

The glow plug tip would be trapped in the pre-cup, blowing it out of a removed injector hole has worked for some in the past, certainly not a stupid idea.