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From: Adrian on 13 Jan 2010 07:12
naffer <timbrook99(a)hotmail.com> gurgled happily, sounding much like they
were saying:

> The car was put in for regular service. The service included replacing
> glow-plugs.
> Garage says,
> "One of the glow-plugs sheered off when we were removing it. You can
> probably manage on the other three or would you like us to take the head
> off the engine to effect a repair. The engine job will cost about
> £600".
>
> Is it likely that I can insist that the garage does to repair at its
> expense?

Only if you can prove that they sheared the plug through negligence,
which is extremely unlikely.

What age is the car, what mileage, and have the glow plugs ever been
replaced before?

They can and do corrode and seize in place, possibly exacerbated by poor
workmanship on replacement last time. It can be effectively impossible to
remove them in situ if particularly bad.
From: Mrcheerful on 13 Jan 2010 07:55
Adrian wrote:
> naffer <timbrook99(a)hotmail.com> gurgled happily, sounding much like
> they were saying:
>
>> The car was put in for regular service. The service included
>> replacing glow-plugs.
>> Garage says,
>> "One of the glow-plugs sheered off when we were removing it. You
>> can probably manage on the other three or would you like us to take
>> the head off the engine to effect a repair. The engine job will
>> cost about �600".
>>
>> Is it likely that I can insist that the garage does to repair at its
>> expense?
>
> Only if you can prove that they sheared the plug through negligence,
> which is extremely unlikely.
>
> What age is the car, what mileage, and have the glow plugs ever been
> replaced before?
>
> They can and do corrode and seize in place, possibly exacerbated by
> poor workmanship on replacement last time. It can be effectively
> impossible to remove them in situ if particularly bad.

watch the video here of a proper job in situ:
http://www.youtube.com/watch?v=koghDoROFko


From: martin on 13 Jan 2010 08:35
On 13/01/2010 12:55, Mrcheerful wrote:
> Adrian wrote:

>> They can and do corrode and seize in place, possibly exacerbated by
>> poor workmanship on replacement last time. It can be effectively
>> impossible to remove them in situ if particularly bad.
>
> watch the video here of a proper job in situ:
> http://www.youtube.com/watch?v=koghDoROFko

Oh wow! How would that take in real time Mr C?
>
>

From: Mrcheerful on 13 Jan 2010 08:48
martin wrote:
> On 13/01/2010 12:55, Mrcheerful wrote:
>> Adrian wrote:
>
>>> They can and do corrode and seize in place, possibly exacerbated by
>>> poor workmanship on replacement last time. It can be effectively
>>> impossible to remove them in situ if particularly bad.
>>
>> watch the video here of a proper job in situ:
>> http://www.youtube.com/watch?v=koghDoROFko
>
> Oh wow! How would that take in real time Mr C?

That video is of the mercedes cdi engine which is well known for stuck glow
plugs, hence the purpose made kit. If access is good then about half an
hour per plug should be enough. But on some engines you need to remove the
injection pump before you can get access, so every vehicle is different.
The main point is that with the right equipment and skill, glow plugs can
often be sorted out without removing the head and taking it to an
engineering firm.


From: Dave Baker on 13 Jan 2010 09:07

"Mrcheerful" <nbkm57(a)hotmail.co.uk> wrote in message
news:mak3n.25492$Ym4.18310(a)text.news.virginmedia.com...
> martin wrote:
>> On 13/01/2010 12:55, Mrcheerful wrote:
>>> Adrian wrote:
>>
>>>> They can and do corrode and seize in place, possibly exacerbated by
>>>> poor workmanship on replacement last time. It can be effectively
>>>> impossible to remove them in situ if particularly bad.
>>>
>>> watch the video here of a proper job in situ:
>>> http://www.youtube.com/watch?v=koghDoROFko
>>
>> Oh wow! How would that take in real time Mr C?
>
> That video is of the mercedes cdi engine which is well known for stuck
> glow plugs, hence the purpose made kit. If access is good then about half
> an hour per plug should be enough. But on some engines you need to remove
> the injection pump before you can get access, so every vehicle is
> different. The main point is that with the right equipment and skill, glow
> plugs can often be sorted out without removing the head and taking it to
> an engineering firm.

Even as a perfeshunal enjinear it took a while to work out exactly what was
going on in that video. However having Googled to see what a complete glow
plug for one of those ought to look like I assume that the one in the engine
broke below the top thread leaving just the bottom part in situ and the
thread in the head still ok. The sequence then seemed to be drill, tap,
screw in impact puller, pull out broken remains, ream hole for new glowplug.

However if the old plug broke above the thread because it was rusted into
place it would be an entirely different problem. So do they normally break
below the thread or above it?
--
Dave Baker


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