Independent Renault Forums banner

1 - 10 of 10 Posts

·
Registered
Joined
·
13 Posts
Discussion Starter #1
Hi , lookin for a bit of advice regarding the best way forward, i was having problems starting the car in this cold weather so thought would change the glow plugs, 1st one went fine but when went to take others out they where just turning and not coming out so after a bit of a search on google i think whats happened is someone in the past has tried to change them and they have snapped which seems to be common, just want a bit of advice on how i get them out now, car is 2001 scenic 1.9dci
 

·
Technical Supremo, Platinum Member
Joined
·
7,755 Posts
So have they turned out got to the top of their thread and are being held by
carbon or damage on the heat element bit, if that had happened then spraying carb
cleaner or egr cleaner round the plug may soften the carbon enough so you
can wiggle them out.
 

·
Super Moderator Technical Supremo Platinum Member
Joined
·
21,939 Posts
If you have unscrewed them and they are still turning but not coming out, then you are possibly OK, jammed not snapped.
Hopefully anyway.

The nose of the glow plugs is a tight fit into the cylinder head/combustion chamber and carbon build up can jam these in so they rotate but won't pull out.
Give the loose ones a good flooding with WD40, screw them back in, get engine hot, try one while engine hot.
Gentle twist, turn push pull and see if it will tease out.
Not brute force as this will snap them.
One at a time, get engine hot between each.

If they have snapped or the nose has loosened from plug body..... screw them back in and hope weather doesn't get much colder.
There are specialists who offer to remove snapped plugs... some can.
Stud removal kit can do it.
Else it is cylinder head off and that is a major job.
 

·
Registered
Joined
·
13 Posts
Discussion Starter #4 (Edited)
Hi not even out a little by what i can see looks like the nut part of it has just snapped of but stayed in place so they still work, i was going to leave it until it warmed up but it struggling to start now, looks like its going to be extract kit to get them out? wish i lived next door to a mechanic lol
 

·
Registered
Joined
·
13 Posts
Discussion Starter #5
If i have to extract them what are the chances of them falling into the head or are they tight in the hole that they won't the last thing i want to do is take the head of in this lovely weather
 

·
Super fantastic Mod Technical Supremo Nice Guy
Joined
·
37,665 Posts
Buy a can of easystart, use that to get your car going over the cold coming months
Its not as easy as it looks watching ytube videos,.
If the tip stays in the bottom, and you start the car, it can get sucked into the engine, and fubar the head, pistons.
Or as you go to drill the lower section of the glowplug out, it could drop in
Engineers who come out will also inform you, even though it looks like all the glow plug is out... Not always the case.
To buy a decent kit, ( plus hoping you get them out) could cost as much as changing the head.
Not trying to put a damper on things, its a 15 year cylinder head .....
Once the weather is warm ,,,, then you can contemplate the job....
 

·
Registered
Joined
·
13 Posts
Discussion Starter #7
That sounds like good advice to me thanks il run it as it is for now see what happens and like you say wait till it warms up
 

·
Super fantastic Mod Technical Supremo Nice Guy
Joined
·
37,665 Posts
Ran my Mondeo Estate for two years through the cold weather on easy start, one blast down the breather pipe, yes breather pipe into inlet manifold, might even have been 3 years or even 4 years...
Only need it after its stood for overnight, or around 8 hours..
And I can get hold of a professional kit, still shied away:grin2:
Once weather went back up a few degrees, no issues in starting0:)
 

·
Registered
Joined
·
13 Posts
Discussion Starter #9
Thats good goin lol ol be buying a can in the morning, thanks all for the great advice as usual
 

·
Registered
Joined
·
97 Posts
The extractor kits are less than £30 on fleabay you have a step drill and then you tap a thread into the bit you drill in the plug.You then put a threaded bar (in the kit) that has a extractor and as you tighten it up it draws the broken plug out.Because it has a bar attached it cant fall inside
Hope this helps as i pulled 2 out my Renault Master no problem at all
 
1 - 10 of 10 Posts
Top