glow plug broke

coolguy147

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Jul 14, 2008
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2,817
glow plug broke off in my buddy's truck. what can he do? the plug has this stud piece on there still but the hex piece broke off...
 

JB

Honorary Moderator Emeritus
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Mar 25, 2001
Messages
45,907
Re: glow plug broke

C'mon, cool one. Tell us what truck, make, model, etc.

Oh, and you need a new SHIFT key.
 

puddle jumper

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Jul 5, 2006
Messages
3,830
Re: glow plug broke

As a rule you have to take the cylinder head off but you may get away with the ford spark plug tool for removing the new two peace plugs that brake
 

coolguy147

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Jul 14, 2008
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Re: glow plug broke

lololol sorry! it's an early 90s F-250 ford.....


shift key?
 

rbh

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Mar 21, 2009
Messages
7,939
Re: glow plug broke

Early 90's, 7.3? (turbo or not, does'nt matter) take off the head, "turn it over" spray in your favourite carbon eater around the glow plug, let sit spray again, let sit.
Turn it over, can you get an easy out down the center of the old glow plug were you broke off the 7/16 or is it
3/8 ths head??

Anyways start there,
(you may be better off taking it to a machine shop so you do not screw up the threads in the head anyways)


My .02c anyways
 

coolguy147

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Jul 14, 2008
Messages
2,817
Re: glow plug broke

the little stud is sticking up so you can get a vice grip on it but it might break.....

is it possible to heat up the head around the glow plug or would that damage something and catch on fire? thing reeks of diesel....
 

sasto

Captain
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Jun 1, 2010
Messages
3,918
Re: glow plug broke

I usually fix things like this.....by moving further south....where it's warm. You won't need a glow plug. (I have nothing)

Good Luck!

PS: coolguy, shift key for caps! ;)
 

coolguy147

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2,817
Re: glow plug broke

lol sorry about the grammar. i usually read over things when i do stuff for school.
 

sasto

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Re: glow plug broke

No worries, coolguy.

Any luck on the glow plug?
 

coolguy147

Commander
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Jul 14, 2008
Messages
2,817
Re: glow plug broke

ummm i believe it is currently still in the block. my friend hasn't done anything to it yet lol.
 

Lakemeadan

Petty Officer 2nd Class
Joined
May 25, 2010
Messages
123
Re: glow plug broke

I would start off trying to remove it first before removing the head. Spray with JB 80 or other penetrating fluid first. Hopefully you can get to it easy and see well. If you can use a vise grip, small pipe wrench or channel locks try that first. Don't jerk it, apply small to even heavy pressure and hope for luck until snaps. Hate it, now its time for drilling and using easy outs. Many articles on this. Must keep center and large enough but smaller than the thread size not to mess up. Go slow and have patience, think like a surgeon. Even pressure but don't break the easy-out. Drill deeper if needed. Good luck.
 

coolguy147

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Jul 14, 2008
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2,817
Re: glow plug broke

is it possible to hear the block with a torch or would that be bad?
 

lennyb

Seaman Apprentice
Joined
Sep 10, 2011
Messages
35
Re: glow plug broke

The center part is the electrode (it will not hold for removal). A small easy out should work (i've done this @ work before with much success). Just tap in on lightly and turn, it will bite onto the remaining shaft and should come right out with a little effotr. if this does'nt work then the only option is to remove the head..
 

j_martin

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Joined
Sep 22, 2006
Messages
7,474
Re: glow plug broke

What's a glow plug? Can't seem to find one on my Cummins 5.9
 

NetDoc

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Aug 20, 2011
Messages
517
Re: glow plug broke

I agree that 7 out of 8 glow plugs working will get the engine fired up fine. Don't sweat it UNLESS it shoots the center out. If its starting I would suggest that you DON'T PLAY WITH IT. Once the center comes out, you'll HAVE to get it out. If you have to, I would probably measure one of the old plugs that came out and figure out what the thread size and pitch are. Then look up the right drill you need for that tap and then drill it out as centered as you can. If you are not careful, you might be ruining this head. If you are centered correctly, you'll be able to peel the old threads out and then chase it with the appropriate tap. I've done this twice on gas engines where customers broke off the housing by not adhering to the first rule of mechanics: Righty tighty, lefty loosey. :D
 
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