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

On 13 Sep 2006 11:51:18 -0700, dingbat@xxxxxxxxxxxxxx wrote:


J D Craggs wrote:

I am attempting to remove two very reluctant spark plugs.

Not a clue, but I'd suspect the corrosion is electrolytic rather than
coking. Are they at the bottom of a well which has sat full of
rainwater ?

A useful trick for brake bleed nipples is to lightly warm up the
aluminium, then melt a couple of icecubes onto the steel inner. This
thermal cycling is quite effective at freeing them, and they're smaller
so far more fragile. Not sure if you've got the access to do it on a
spark plug though?

The heads are already off so I may be able to do something
along those lines. Thanks for the suggestion.

Gyppo

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