Re: Best penetrant to help remove spark plug stuck in an aluminium head.


J D Craggs wrote:
I am attempting to remove two very reluctant spark plugs.
They have not been shifted for over ten years and I suspect they are
stuck with a mixture of carbon and burned-on oil. I have no reason to
suspect they are cross-threaded, and they are the right length for the
head so there is no carbonised lump at the chamber end as can happen
when a long reach plug has been wrongly used in a short reach hole.

A modest degree of brute force and a well-fitting socket
having failed I wonder if you chaps - who have doubtless come across
similar things with some of your old iron - have any recommendations
as to a good solvent/penetrant to help ease them free.

Thanks in advance,

Gyppo

Best stuff I have ever come across for such jobs is Millers Graphited
Penetrating Oil, not cheap and it stinks, but leave stuff to soak in it
for a week or so and it will generally come apart. www.millersoils.net
has more info.
Regards
Dan

.

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