As recalled elsewhere, I need a new plug for my lambda sensor boss (I'm not fitting a sensor full-time).

In the past people have suggested an old spark plug - does this sound OK? Will it cope with the hot exhaust?

It copes with the bang in the combustion chamber!

If you bare with me I might have a spare bung in the garage, will check later, when I remember where on earth to start looking!!

[Edited on 5/5/08 by darrens]

Nick Skidmore may be able to supply yuo with a plug. I got a boss and plug off him.

Too easy?

Easy - but expensive.

I have an old plug somewhere, hence my original question - the free solution!

[Edited on 5/5/08 by David Jenkins]

This was one of Nick Skidmore's efforts - but it wasn't his fault, as I take full responsibility for the way it was fitted! His product was fine (there's not much to a threaded tube and bolt, after all).

I've since had a good look at the original plug - only the end threads are knackered, and I can turn them off in the lathe so it should be re-usable.

I'd like to apply some anti-seize compound to the threads to prevent this happening again - but I don't want to mess up the sensor when I do fit it. I know that many compounds will affect the sensor, especially anything containing metal (copper grease?) or silicones.

Anyone know what the grease is that comes already applied to sensors? It looks like a graphite grease, which would make sense.