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aklim 12-27-2004 09:00 PM


Originally Posted by sokoloff
So Aklim, have you made any progress on your broken off glow plug?


Not as yet. Having an MB Tech try drill it out. Goes beyond my skill level at this point.

sokoloff 12-27-2004 09:13 PM

Well, to their credit, I have not not had any really bad experiences with them. We've had a couple of items we didn't quite see eye to eye on, but overall I'd give them passing grades. It's more of an inconvenience thing and a cost thing and a feeling on my part that I will give the car more loving care. :) I took the car to them a few times when it was under warranty, but other than that, I'd rather do it myself.


sokoloff 12-27-2004 09:18 PM

Aklim - kep us posted as to your success/failures/costs. etc. with the job. Good data points for future reference. I know what works on glos plug #1. Your results will tell me how to do #3. :)


aklim 12-27-2004 10:15 PM


Originally Posted by sokoloff
Aklim - kep us posted as to your success/failures/costs. etc. with the job. Good data points for future reference. I know what works on glos plug #1. Your results will tell me how to do #3. :)


Well. So far we have drilled it but it won't work. Guess we are going for a head job. Used the right bit and all but it is still stuck. Turned engine over several times but no joy.

One big failure and no success. Anyways, the cost is not going to be comparable because I am getting a tech to do it on the side.

sokoloff 12-28-2004 10:09 AM

That's too bad. Have you gone up to a 3/8ths or even a 25/64ths? A 13/32nds might be just a hair too much. All the threads of the glow plug are removed and the center heating element has been drilled out? Man, I really hate to see you have to go the head removal route if that glow plug can be accessed with a drill.

Again, good luck. We're thinking of you and hoping for the best.


aklim 12-28-2004 10:23 AM

gone thru all those bits and still no luck. Will have to have the head removed. On the plus side, we can clean out the soot that holds the GPs in. Maybe next year I will have to ream it out to make sure it stays clean again.

aklim 12-30-2004 07:32 PM

Just had a Menage e Trois on my 210. 2 MB techs on 1 car. Gilly and another MB tech who will remain anonymous. They got the GP out. However, it is not sealing well. I suspect we will have to retap the hole since the threads are FUBAR. Can't get the M12 X 1.25 to start on it. Don't know why. I measured the tap and it was 16 thousands more than the GP. Also the drill was a little slanted and took some head material off. I suppose it would be ok since the threads are what seals the GP to the head. I will look into the MB kit since it might have some stuff I need out of it.

BTW, If anyone has a GP issue, have Gilly look at it. Gilly did my fix or at least had a large part of fixing it.

Bottom line? Light at the end of the tunnel but not out of the woods yet.

aklim 12-30-2004 07:35 PM

Talked to someone at another MB shop and they think that they have parts of the kit. They will try get all the parts together and then see how to retap my head. Funny thing is that the kit lists some inserts that will go into the head to replace the threads that you might drill off. These inserts list as M10 X 1. WTF? The GP is M12 X 1.25. Maybe they printed somethign wrong? We will see.

aklim 12-30-2004 08:01 PM


Originally Posted by mespe
An M 12 x 1.25 bolt fits in an M10 x 1 thread!!! :eek: :D :D :D

Those were the inserts that came in the kit. Don't look at me. I only repeat what I was told.

aklim 01-02-2005 02:07 PM

Oh well. The inserts were M10 X 1.0 not M12 X 1.25. The WIS cannot be found and nothing in the kit seems to work for my case. I'm tired of screwing around with it. Headjob is next and the machine shop can deal with it. We are just prolonging the inevitable anyways.

sokoloff 01-02-2005 06:55 PM

Maybe I'm missing something here, but you got the glow plug out right? Now you only need to repair the threads on the head? If that's the case, then the head doesn't have to come off. Buy the correct size Timesert and a mechanic ought to be able to install it with the head in place if you don't want to do it. Ought to cost you maybe a hundred bucks. Beats the hell out of a $2500 head job.


aklim 01-02-2005 07:00 PM

We did find the area in the head we drilled where we weren't supposed to. I was going to have it taken out in my garage to save the shop cost of taking it out. Then have the machine shop weld some material back to the head and drill it. I will probably be looking at 12 hrs of labor which is about $300 to R&R the head and then the cost of the machine work to weld more material back so it seals right.

We took the GP out but if you look down the hole, you can see one deep hole where the GP tip goes thru and at 4 o'clock, where we drilled the GP out at the wrong angle. That is what I am going to have it taken out and fixed. The timesert will fix the threads but something needs to be done about the missing material.

sokoloff 01-02-2005 07:27 PM

Okay, got it now maybe. So the area that needs to be repaired is where the tip of the glow plug goes through the prechanber? If that's the case, will just a new prechamber fix it? That would also save you from having to remove the head, but you would need to buy/borrow the prechamber removal tools. I've never had a prechamber or head for that matter out on one of these engines, so I'm not positive what I suggest will work?


aklim 01-02-2005 10:15 PM

This is the head material that was drilled up so no amount of prechamber work will fix it.

sokoloff 01-03-2005 08:27 AM

Sorry to hear that. So the additional head material needs to be added at the tip end of the glow plug and not at the threads correct? If I'm not being too much of a PIA, could you please tell me how that happened? I assume that you drilled a little too far or possibly at a bad angle or maybe both. You mentioned the damage being at 4 o'clock. Did you go all the way through the head at that point so that the glow plug won't seal? I'm just trying to gather some info so that the next time I have to do, I'll have some background info. How big of a piece(s) did your glow plug come out as?

Thanks. Good luck with it and keep us posted on the outcome. I understand your frustration. I went through the same thing. My car was like that for about six weeks while I fiddled with it and debated what I should do next.


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