Dieselpumpuk epic om606 6 glowplug removal
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- เผยแพร่เมื่อ 9 ก.พ. 2025
- This is the best option to removing a seized glowplug from a mercedes om606. The plugs had been lubricated every day for 365 days which did not help at all and they snapped off anyway. Heating the engine up also does not help in this situation unfortunatly.
That is genius way to remove them. I started think it'd be easy, my engine still in the car. And i broke 3 but couldnt remove them then gave up and welded them shut. Now my om606 only has 3 working glow plugs.
I've just done this on one glow plug on an om605. Couple of tips- be very gentle drilling the plug casing out to 7mm as it will want to bite and pull the drill in which could cause the drill to snap. Do it as luke says and drill away the 10.5mm threaded part first. Go straight in with a 10.5. working up to a 10.5 with smaller drills will just build in errors.
I had to use a die grinder to get back on centre. Other than that it's pretty satisfying. The one I did took a lot of slide hammering. Felt like it was welded in.
Also, the thread didn't release on mine when I got the plug out so I stuffed some tissue paper into the hole and picked some of the spiral of glow plug thread away then cleaned the rest out with a tap.
If you use a stone to put negative rake on one side of your drill bit, it stops the drill bit snatching, same method for drilling brass
Man your skill for extract the rest of the glow plugs is awesome
Wish I had of seen this before trying to remove glow plugs from an BMW M47 engine.
Great video 👍
bless you for being able to remove the stuck glow plugs
Best Video Ever in Category: Broken Glow Plug
Great work. Keep it up. Especially the end shows me that you are a humble person and I like that and the most important thing in life is sympathy.
Did mine with the engine hot and plenty of oil applied to the engine hot.
I ran the engine to keep it hot and oiled the plugs. Slowly I removed them seized plugs but I put antizeee compound on the plugs before installing them. I used a reemer tool to clean the glow plug chamber because carbon build up kills glow plugs.
inspecting my glowplugs every 40,000km pulling them out cleaning re-install.
✌️
I've heard that much of these motors were assembled with "pride and precision" and fairly advanced techniques that very few of us would be lucky to match "at home," to include the installation of the cylinder head and the bearing clearances. With respect to the head, did the factory REALLY do such an amazing job to make it so that pulling the head, having everything properly cleaned and machined, and properly re-installing is still inferior to one that had never been apart?
Did mine the other day, so glad they came out very easily. I think the oily biodiesel helped.
Excelent Video! Best Glowpug removal.
Brilliant video! helped .e out greatly in removing mine from the om605 ... got some parts from you last week all good! the videos are a big help :)
i only had 3 broken on mine but i drilled with a 10mm then tapped out the remaing threads. then i put it all togheter and drove untill they flew out of there. had to remove the manifold every time but it was really simple =)
I haven't done it yet but I have read that if your engine is in the car, you can take it on a good hard drive to expand the aluminum head, while the glow plugs are steel so they should loosen in the threads so to speak.. Obviously this engine isn't in the car but who knows maybe this comment will help someone someday.
That's very interesting. I had to remove one from a 1.7 Isuzu, and the probe on the end snapped off. With the head off I ended up having to drift it out into the swirl-chamber and cut the end off with a modified hacksaw blade 10mm at a time.
Hi, good video, please can you clarify: at about 5 mins you say the glow plug thread is 10.1 (the vernier display actually shows 10.01) and you’re going to use a 10.5 mm drill; won’t this destroy the threads in the head? Thanks
The thread is M12x1.25 so u just drill out the core, the tread Itself stays, or should if u hit the center......
Really sexy job indeed.
Luckily my BMW M47N2 4 cylinder diesel actually has doggy glow plugs too but because it is a small engine it doesn't need them to work properly (as in 100%) it must be -20 degrees outside temperature to crank the engine 2 times more before it starts so no problem, keep them as they are. But to loosen up seized plugs a mixture of acetone & steering fluid (and time to drench it) should be ideal an expert once told me. And what if the plugs (the small point sticking through the pre combustion chamber) is largely increased in diameter due to the (heavy) carbon build up? You won't be able to pull it through I can imagine.
Keep them coming these good videos.
Have you ever tried heating the local area with a blowtorch to expand the threads? I don't know if it'd help but I'm curious if anyone has tried it
Probably a repeat question but are you drilling just barely inside the thread on the glow plug and hopefully avoiding the thread on the head? Precision engineering with a battery drill and an eyeball😅🎉
Holy Christ what a bear to get out. Fine job for sure!
Been planning this for ages and was always concerned about potential for drill chips entering prechamber until you provided this visualization of the machining process. Question- Instead of slidehammer could a puller be fabricated and used that bases off outer cyl head surface? Great video
Really interesting video, thank you
it seems like the TIG torch is performing the function of and induction heater to unstick the plugs and bolts.
Fair play Luke. This helped me today. Good thinking.
Did you re-thread the holes? Doesn't the pulling damage the old threads?
Sería muy bueno que se ponga la traducción así nosotros que estamos por Asunción Paraguay entenderemos las indicaciones.
Have a look at the Klann Tools KL-0369-300, it is a special tool for snapping off the electrodes to make drilling the glow plugs out easy.
I have one and it saves a lot of time, especially with limited access.
Still easier than removing the head, so thanks!
After fitting the new plugs would it be a good idea to remove and reinstall them every few years?
This is a fantastic technique! Is it possible to do with the engine still in the car? Does the carbon get around the plugs because they aren't sealing properly?
It happens every 40000 miles because it just accumulates
ah the question I actually wanted to ask is, when the hell are we going to see the FORD/GM joint venture 10 speed automatic transmissions enter the after market with MULE controller boxes for mechanical engines like our beloved Mercedes OM6xx series?
hi i have an om606 engine, i have a problem with a spark plug that is nailed and does not unscrew, do you have any useful advice to remove it without having to remove the engine? thank you so much
what about the shavings form drilling
I let penetrating oil soak in over night. then slowly turning back and forth. reamed the holes afterwards with a reaming tool.
yeah been usuing same method to get ford 3 valve V8 spark plugs out when they snap off LOL
glow plug comes off the impact wrench 1/2 " slowly knocking . and comes off intact
I am not understanding how do you still have a thread in the head for the new plug.
I didn't see you make new threads in the head after you drilled out the original thread.
Does the new plug go in deeper?
Does that increase the compression in the pre chamber?
Please respond, I need to do this ASAP.
My guess : The thread in the steel block is M12 x 1.5. The Glowplug is aluminium. First he drills with 7.5mm and taps M8. That's for his slide hammer to thread into. The 10.5 drill that he uses last drills away the aluminium of the glowplug, but not the threads from the block. Again, you need to be dead center for this. After the slide hammer you need to clean the threads in the block ofcourse.
thanks
Barthoization the glowplugs are not aluminium.and you drill whit 6,8mm if you tap m8
So, I'm impressed with the overall lesson but You showed drilling the centre of the 12mm thread to remove the old injector but you didn't show retapping the 12 mm thread that the new injector actually screws into......
Good Job
do you need to retap the threads after running the 10.5mm drill bit
sk8atchelt1
No you don’t need to Tap it after drilling because they will be there and few Clips will fall down by themselves, that’s if u aimed at correctly while drilling of the snapped glow old GP
Good luck and don’t fear Because you won’t be creative because you’re in the state of fear.
have confidence you can do it
whats the cost if the engine is sent to you ?
Nice work fella's
Love it 👌👍
does this apply to OM605 engine?
What size nut did you use on electrode??
great video, thx !
9:01 :D
They weren’t coming out without that slide hammer
Just out of curiosity are you an engineer by trade or self taught? :)
brilliant
Beautiful
when you drill with 10.5mm you have to cut new thread for new glow plug?
yes and what about the metal from the tap ? it stays in the cylinder
The 10.5 drill bit leaves the head thread intact you end up pulling the glow plug thread out. It's like a heli coil. The metal stays in the glow plug as you don't drill out the end of the electrode. I've just done it today
Leave glow plugs in and use methanol to start
What the actual fuck was Mercedes thinking when they did this?
out of interest why cant a DIY'er remove the head and refit?
It's really difficult to get the head bolt torque as even as it was at the factory. On a long 6 cylinder engine the head gasket has a much harder job than a 4 cyl, or the 3 of a V6. Any differences in clamping force can lead to a head gasket leak :(
compu85 thanks for the info, really nice to have a decent description of why! :)
You might have uploaded this 6 weeks ago! butchered!
Bit of brain and a little braun