Re: [T3] New spark plugs and a confession

["Keith Park" <topnotch@nycap.rr.com>]

Jim!

Such Neglect!  tisk tisk ;)

I do my plugs every 15K, as the book reccomends, the the edges of the center
electrode are a bit rounded but the gap has never really opened up much.  I
suspect your plugs have been in there 60-80K mi!
   Ive pulled plugs on a couple badly neglected GM cars and they looked as
you described, and were talking that kinda mileage that they'd been in
there... the HEI GM systems were very resilient to .100 gaps!
    I had one of the resistor ends burn through the side and open up once,
it was very evident on damp mornings.

Keith




> Finally, I had time this afternoon to pull a spark plug. I have to confess
that
> I've never before seen a spark plug that was so in need of replacement.
The
> center electrode was eroded down to a little bump just sticking out of the
> ceramic. The gaps were probably close to .060". All the sharp edges, where
the
> spark can jump from, were eroded round.
>
> I pulled the rest of the plugs and they were all the same. I checked the
SP
> connectors and the resistor in one of them had gone open. It's actually
quite
> amazing that it would run at all, although the signs were that it was on
the
> verge of not running.
>
> I replaced the 4 plugs and the connector and then took it for a drive.
>
> Wow, what a difference!
>
> I wonder how long those plugs had been in there....
>
> -- 
> *******************************
> Jim Adney, jadney@vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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