Spark Plugs - Electodes falling off!

[Jim Haseltine]

----- Original Message -----
From: "Phil Payne" <quattro at isham-research.com>
>
> Yes, seen it several times.  The engine has ingested a small hard object
and
> hammered it against the plug.  Drop an Aaron Bend-a-Lite or something
> similar down the hole with the piston at BDC and let us know what you see.
> My money is on a forest of small circular marks - 6mm or so in diameter.

Seen this sort damage a couple of times but only on VW/Audi vehicles and
I've a theory forming but don't know if I'll ever prove it.
Those strange marks, don't they seem to be remarkably similar in size to the
threaded sleeve thats fitted to the top of spark plugs? And what do you do
with the sleeves when fitting new plugs to a VW/Audi - you take 'em off and
trash 'em.
If you drop one where's it going to end up?
Murphy's Law......

Jim Haseltine