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I have a 2003 Laguna 1.9 dci Inititale. The garage wanted to remove a faulty Glow Plug but they couldn't remove it. They said that as its ceramic at the bottom it could shatter leading to more work - and at Renualts prices this could mean a remortgage!

Does anyone have any ideas how we can take out the Glow Plug safely?

Also, where has the thread gone about Laguna engine not starting when its hot? I have the same problem. The thread apparantly has moved - but where too?

Matt
 

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Hi i would try to take the plug out when the car is hot this may made it just that little easyer to remove and spray it with WD40 and leave to site for awhile i hope this helps.

The forum as been through a few changes in the last week and some parts are know Subscripion only this is where it has maybe moved to but iam not sure i hope this helps all the best Donald
 

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I'd agree with Donald, try removal with the engine hot.

Also I'd get confirmation that the base of the glow plug is in fact ceramic.

I know things could be wildly different, but I'm looking now at a glowwy that came out of my old 2.2 RTDT Lag 1

PN on the box 77 00 861 906
GN 905

It certainly doesn't consist of any ceramics.
 

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If the ceramic part breaks off,then it's a head off job to get it out!:(

The end of the plug expands and gets stuck in it's mounting hole,so as you undo the plug the tip breaks off........
 

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If the ceramic part breaks off,then it's a head off job to get it out!:(

The end of the plug expands and gets stuck in it's mounting hole,so as you undo the plug the tip breaks off........
lagdti Which bit of it is ceramic bit.

The one I'm looking at is used, but still kicking. The only bit that I can see that could possibly be ceramic is the electrode, but since this is only about half the diameter of the thread, I can't figure out how it gets stuck. :confused:
 

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Thanx mag1 yes that is one, it looks just like the one I have here. I'm assuming now that the ceramic bit must be the electrode on the right hand side of this picture, but I can't figure out why this should break off, it looks so narrow compared to the the rest of it.
How could the electrode, if that is the ceramic bit, snag or bind? :confused:

 
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Never having done one and looking at the picture you have posted and comparing it to the one I posted

It steps down three times after the threaded bit.
AND ONLY TWICE ON YOUR PICTURE.

It would seem that the electrode has burnt away.

I will try to find some more clearer pictures.
 

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I must admit,I'm not sure if the end is ceramic,but the tip is the part I was talking about!:eek:

The tip fits into a small hole which is a reasonably snug fit,but as the plugs get used the tip swells(oo-er missus!),and consequently when you undo the plug,the end snaps off and stays in the head.I've had it a couple of times,but have never had to remove a head as the customer has asked for the broken plug to be re-fitted and they've gone on their merry way.Common rail diesels rarely need the plugs to start in 99% of conditions,so one dead one doesn't make too much difference.

I had a plug snap on an HDi Peugeot engine and actually ran the engine with just the tip in the head hoping it would pop out,but it didn't budge and the car is still running around now with only 3 good plugs in it.I see it quite regularly and the customer has never had any problems with poor starting.:)
 

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Mag,all glow plugs vary,and both the pictures show new plugs which are designed to be their specific shapes.

Common rail diesels tend to use plugs that are much longer than mechanical systems.:)
 
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Mag,all glow plugs vary,and both the pictures show new plugs which are designed to be their specific shapes.

Common rail diesels tend to use plugs that are much longer than mechanical systems.:)
Just trying to help,

HIS BEST BET IS TO WAIT AND SEE A NEW ONE UP CLOSE
AND THEN MAKE A JUDGEMENT.
 
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Hondo

Sorry Old Chum But Your Best Bet Is To Wait And See A New One Up Close And Then Make A Judgement.
 

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Stuck Glow plug

The tip or heating end of the glow plug isn't made from ceramics - it is either platinium or iridium which can transmit heat from it's internal heating element yet be able to withstand the effects of combustion and all the chemicals involved. They can be quite soft depending on their age. I have seen probs with seized glowpugs and if forced they break just below the hexagon nut section. (see below) The old Ford Escorts suffered the same problem with their spark plugs as both the ford plug and the glow plug are seated on a taper face which can become difficult to undo. :)
 

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I think we’re almost all getting confused now. ;)
mag 1 I haven’t got a problem with my glowies yet, well I hope I haven't.

The pici I took was of a glowie that came out of my old Lag1 TBH, these are the only out of car glowies that I’ve ever actually seen.

I know compared to loads of other posters I have a lack of knowledge, but after reading about the ceramic and looking at my glowie I was concerned about the alleged ceramic bit referred to from mattdud post click here

BTW I know there isn't a solution to mattdud problem yet, but nevertheless, great posting folks. :)

madnoel10 thanx for the information on either platinum or iridium. Can someone please explain WTF the ceramic bit comes in? My concern was that maybe mattdud was being misled by the garage.
 
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Nice to know that your not having problems

Everyone was trying to help you and that's nice
I've no problems with any post

What a great bunch hey!!!!!

I have personally stripped many two and four stroke engines
FROM MOTORBIKES,CARS,BOATS, BUT NEVER DIESELS

Though I have read many parts books on diesels.

nice to know so many care.
 

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I have a 2003 Laguna 1.9 dci Inititale. The garage wanted to remove a faulty Glow Plug but they couldn't remove it. They said that as its ceramic at the bottom it could shatter leading to more work - and at Renualts prices this could mean a remortgage!

Does anyone have any ideas how we can take out the Glow Plug safely?

Also, where has the thread gone about Laguna engine not starting when its hot? I have the same problem. The thread apparantly has moved - but where too?

Matt
Hi again you said the garage could not remove it, have you tryed yourself, i do not wish to scare you but if you try and it moves and comes out easy!!!!its just a guess but i wonder if it broke with them and they have just screwed it back up for you to deal with it. I hope this is not the case but if you are unable to get it out i would just go to Renault and let them deal with the problem i hope you get it sorted out keep us all posted on this cheers Donald
 

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Nice to know that your not having problems

Everyone was trying to help you and that's nice
I've no problems with any post

What a great bunch hey!!!!!

I have personally stripped many two and four stroke engines
FROM MOTORBIKES,CARS,BOATS, BUT NEVER DIESELS

Though I have read many parts books on diesels.

nice to know so many care.
Well said, and I agree mag1, I wanted to leave you some rep points but the forum say's I got to spread some elsewhere first. :crazy:
 
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