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Glow plug snapped in cylinder head


countryman
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In simple terms the soot and burnt oil are recirculating via the intake via the egr valve ? This coats everything with very sticky black crud in including the glow plugs which means they won’t clear the hole. Believe rotating them out or vibration is advisable.

hope it gets sorted soon ! 
 

Agriv8

 

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On 31/12/2022 at 10:10, ditchman said:

whilst you are at it ...remove all the glowplugs whilst the engine is hot.....if the ones you remove are good....before you put them back coat the threads with copper-slip...so you wont have the same problem again.............

I would use something with molybdenum disulfide in place of copper - reduces risk of galvanic corrosion, not very common but given the importance/risk and high temps its probably more likely in the engine bay!

Best to use a T-handled socket wrench or ratchet, that way you get a more direct 'turning' of the nut/bolt/plug and less twist/shearing & bending forces, gets you directly overhead to remove whatever is stuck! Great if you have access to do it that is.

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11 hours ago, countryman said:

Sorry a bit late with the update, I’ve not been to good the last few days, The specialist got the snapped glow plug out fortunately so the cylinder head did not have to come off, the cost of that was £165, paid by me.  

Why didn't the garage responsible pay for the fix?

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OK, I'll bite.

If you have a vehicle where a component, whether it's a glow plug, injector, bolt or whatever is so seized that it's going to break when removed, how is it possibly the fault of the garage removing it?

Yes, there are things you can do to reduce the chances of it happening, but ultimately some things are just going to break...end of!

The amount of tools and specialist services dealing with just seized injector and broken glow plug removal should prove it's a common problem and not just the result of ham fisted mechanics.

We warn all customers of the potential for breakage or seizures before we start a job and the worst case cost wise.

If they won't accept it, we won't do the job, I'm not a charity.

7 hours ago, countryman said:

Apparently not, if it’s seized in it would break anyway.

Exactly. 

 

 

 

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Having worked on every conceivable vehicle out there, I think I'm well qualified to comment on this. Components can and do fail, and when they do it's not always a walk in the park to replace them. Glow plugs are a prime example. They can snap like a piece of dry spaghetti with no warning. You can soak them in penetrating fluid overnight, and when you try to remove them they give just a bit. Enough to make you think you've overcame the worst of the resistance, then bang they snap. This can happen even with the engine up to operating temperature.

Trying to work them back and forward is risky, as it can actually cause them to snap. Customers with zero mechanical knowledge only see what they want to see. The car was ok when I left it, so it's the garages fault for breaking the component. Well this isn't the case. I would go as far as to say the garage should actually charge the customer the incurred fee to remove the broken glow plug. Or if they removed the broken plug themselves, the additional time needed to remove the snapped plug should be added onto the customers bill. As mentioned above, garages are not charities. They have overheads to cover, and time is money to them.

For some reason the public are very quick to run down mechanics, but if it was a plumber or an electrician that encountered such a problem, people would be a lot more accepting of it and more willing to pay. Don't get me wrong, I've seen my fair share of mechanics that should never be allowed near vehicles, but the majority are there wanting to do a good job and earn a good reputation. Especially independent garages who can't hide behind the name of a big firm. Their very survival depends on their reputation, but they cannot afford to work for free.

If the garage notified every customer about the potential pitfalls of every job they take on, they would never get any work done. Things go wrong and the responsibility doesn't always lie with the garage. Vehicles and their components are becoming more about the numbers these days. Parts made to a price, and it's often the quality and longevity of these parts that suffers. Most mechanics are doing the best they can, often working with what I could only describe as complete tat that in some cases has literally just rolled off the production line. 

If you don't trust the garage find another one, but just remember that a garage also needs to be able to trust its customers. Jumping to conclusions just adds to the frustration of all parties involved.

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So chatting to my garage man - yes 3 out of 4 glow plugs are throwing a fault and they need replacing ( checked while having its mot )

he recons he can get them out and tool to extract to hand if they break.

His words are we will take our time getting them and we may need the van for a day or two but get it booked in !

Agriv8

 

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