Help replacing Glow Plugs

Submitted: Friday, Jul 23, 2010 at 20:26
ThreadID: 80264 Views:2869 Replies:4 FollowUps:6
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My son has an 89 Landcruiser HJ75 - he has just tried to replace the glow plugs, got the old ones out, but broke two new ones getting them in, they have snapped off inside and are now stuck. He seems to have tightened them too far. Can anyone help with the correct way to fit them? He has a repair manual, but not much on Glow plugs. Thanks.
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Reply By: Member - Nick (TAS) - Friday, Jul 23, 2010 at 21:30

Friday, Jul 23, 2010 at 21:30
A quick google search tells us to torque them to 14-15 ft-lbs.
Ive fitted hundreds and never used a torque wrench, just tighten till they seat, then a smidgen more.
Has he got the broken ones out??
AnswerID: 425041

Follow Up By: Matt Cruiser - Friday, Jul 23, 2010 at 22:10

Friday, Jul 23, 2010 at 22:10
Thanks for replying, no he hasn't, the top part seems to have broken off, he's not sure what to do. He must have pver tightened them. Any hints on getting the broken ones out?
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FollowupID: 695515

Follow Up By: Member - Nick (TAS) - Friday, Jul 23, 2010 at 22:33

Friday, Jul 23, 2010 at 22:33
No, they will be a real pain.I can only suggest tapping an easy-out into it and try that.But you dont want the tip of the glow plug to fall(or get knocked out) and drop into the cylinder.Then, you'll have a real problem.
Im guessing that its broken off flush and nothing is sticking up above the head?
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FollowupID: 695518

Follow Up By: Joe n Mel - Friday, Jul 23, 2010 at 22:53

Friday, Jul 23, 2010 at 22:53
i would say you are in big trouble ... if .... you go any further, if they have broken off at the base of the hex that the socket grips on to then the bit left willl only have a thin wall and if you use an easy-out you will expand the wall of it and lock it in even tighter...
There is a stud remover that uses a "spline" to grip on the sides of the hole you have drilled and you can work it backwards and forwards but you also may have problems even drilling it out as the core is not just metal, i think you will find ceramic in it also....
All in all it is not looking good for you.
I would not go any further and get a mechanic to at least look at it to see what your next step is, you may well end up having to take off the head.
Not good news for you but the glow plugs dont need to be very tight at all when you fit them ....
Good luck, i hope you "win"..
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Follow Up By: Joe n Mel - Friday, Jul 23, 2010 at 22:55

Friday, Jul 23, 2010 at 22:55
just noting you may find that they need to be tightened in "inch pounds" .......
Not going to explain that, you will find it on a "google"...
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Follow Up By: Member - Stuart P (WA) - Friday, Jul 23, 2010 at 22:58

Friday, Jul 23, 2010 at 22:58
not a good scenario. take it to your mechanic , from my experiance as an apprentice, and having broken a rusted in one , i had to take the head off, sorry for the bad news
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Follow Up By: Matt Cruiser - Saturday, Jul 24, 2010 at 09:50

Saturday, Jul 24, 2010 at 09:50
there are two of them, they are not completely sheared off, the thread is still sticking up, but they are not budging... I think we'll have to get a mechanic, or call the racq before we do more damage, thanks everyone.
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Reply By: Member - Tony (ACT) - Saturday, Jul 24, 2010 at 06:43

Saturday, Jul 24, 2010 at 06:43
He may as well get a RECO Head and do a swap over.
AnswerID: 425051

Reply By: Member - Kevin B1 (WA) - Saturday, Jul 24, 2010 at 09:38

Saturday, Jul 24, 2010 at 09:38
I am a Diesel mechanic and have replaced heaps of Glow plugs and never broken one so he must have put a lot of torque on them. I would also suggest he is in deep trouble and should take it to a mechanic before he does anymore damage. Removal by anyone unless they know what they are doing could end up an expensive exercise.
AnswerID: 425062

Reply By: get outmore - Saturday, Jul 24, 2010 at 11:33

Saturday, Jul 24, 2010 at 11:33
I suggest you take his spanners off of him for his own good

Im not A.M.A but the glow plugs in a 2H are no different or harder than doing sparkplugs
AnswerID: 425072

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