Technical Need help - broken spark plug in cylinder head - photos inside

[Skyriders21]

Hello everyone,

First I apologize for my approximate English but I use Google Translation

4 days ago I had the delicate intention of wanting to change the 4 spark plugs of PANDA 900ie belonging to my uncle and not having rolled for ages ...

The first 3 plugs came very well but the 4th which is of course in a hard to reach place, well it broke after having forced like a deaf to try to extract it ...

In the end I find myself with a piece of spark plug thread that comes out of the cylinder head about 3 mm and everything else that got stuck inside including the ground electrode.

The porcelain part is out, so I have an orifice in which I attempted an extraction with stud extractor Facom and Hazet, with a lever arm of 1m50, nothing came, it is stuck of At stuck ....

I admit to having already appealed to a more generalist forum and I am offered enlarged modo 2 solutions:

Remove the cylinder head (I do not have the skills, I tried to find a tutorial, I found one on a site but that is too succinct for me with regard to my skills ... But this would seem to be the cleanest and most reasonable solution.

The other solution that seems hazardous would be to drill with metal drills 0.5 in 0.5 to use all or almost all the material and remove the remaining thin with pliers.

The risk is to screw the thread of the screw (but apparently recoverable with a repair kit including threaded insert and tap of M14X1,25) and to put full filings the combustion chamber. For that I had thought of a magnet on flexible arm with the help of a camera type endoscope to remove a maximum, but I do not know if the method is really viable or if it is more like a hacking that Is not going to be worth anything ...

I count on your help.

Thank you all and good weekend.

Tom '

 

[dtimmins1985]

Take off the rocker cover for more room?

This happened on a friends old fiat bravo mk1, the plug came out but looked more like a glow plug than a spark plug, the thread and the part the socket goes on was still there but gunned up... hence it was jammed in and the plug snapped.

We took it to our friend round the corner who remove the rocker cover which gave him more room to see what had happened and 25mins later we had the offending plug out... all we did was apply gunk spray (bright orange can) waited 15mins then applied some heat from a trusty blow torch and then he gave it another go, first off by tapping a long socket on what was left of the plug to ensure a tight fit then used torque wrench with a long handle and it was out.

Fit rocket cover back on with new gasket, fitted new plugs and drove her back round home.

What a pain in the arse, how people can over tighten them and not service for so long is just stupid.

 

[Sjvarley]

Your situation is a t
Little tricky !!! Nut Sheerd off at the thread as above the insulation requires removing 1st use a broken Screwdriver to smash up but be careful as it's really. Glass Hoover out remains then get a 10mm Allen key grind to a point on all faces hammer it home then try to remove if that's fail move to the stud extractor method if you Have a good result tape a garden hose into the hoover pipe push through the plug hole and remove debris if broken though the plug Remember that the plug electrode is tunstone Carbide and ceramic insulatin will damage the bore if
Not all removed. [emoji35][emoji35][emoji35][emoji35][emoji35]

 

[Skyriders21]

Thank you for your help I will think but I would like to post pictures you can see the problem ...

 

[Skyriders21]

Re: Need help - broken spark plug in cylinder head - photos insideur

I will try to make 4 notches on the part of the thread that comes out and to tighten with a clamp to try to extract the piece, what do you think?

 

[g8rpi]

Re: Need help - broken spark plug in cylinder head - photos insideur

It might seem like a lot of work, but it will probably be easier to just take the head off. You can then get a both ends easily to get the plug out. You can also vacuum out the broken bits of insulator that have fallen into the cylinder. Try to aviod turning the engine before you do this.
I'll try Google translate myself.

Il peut sembler beaucoup de travail, mais il sera robably plus facile de prendre la tête. Vous pouvez alors obtenir un à la fois extrémités facilement pour obtenir la fiche. Vous pouvez également aspirer les morceaux brisés d'isolant qui sont tombés dans le cylindre. Essayez d'aviod tourner le moteur avant de le faire.
Je vais essayer de traduire Google moi-même.

Robert G8RPI.

 

[portland_bill]

Really must take the head off. Any bits left in the cylinder are likely to cause severe damage when the engine is started. They will rattle on top of the piston, hitting the piston and cylinder head. Even very small debris will cause damage.

 

[panda1408]

Another vote here for removing the head. Not a hard job and removes chance of further damage, drilling out the plug in situ will not be easy and it is very easy for the drill to wonder or go in at an angle, you can quite quickly find yourself with much more of a problem if that happens.

 

[Skyriders21]

Thank you for your advice, I will try to remove the cylinder head but I have weak skills in mechanics and I would like to know if you know tutorials to disassemble and especially remount the cylinder head because I saw that it was necessary to rode The valves, adjust the tumblers ... it seems very complicated ... thank you to you !!