Re: New Bosch plugs

[Todd Young <tyoung@wamnet.com>]

Ken Keith wrote:

> Todd Young <tyoung@wamnet.com> wrote:
> >
> > I remember putting a set of Bosch platinum plugs in my Toyota truck just
> > after I bought it and I ran them for 3 years without touching them,
> > finally one day the truck wouldn't start. A complete ignition overhaul
> > solved the problem. The center electrodes on the platinum plugs were
> > burned down into the insulator, but you have to admit, three years on one
> > set of plugs is pretty damn good.
>
> Do you remember what they looked like new?  Back when I was in my "Bosch
> Platinum Stage", I remember noticing that the electrode did not protrude
> beyond the insulation at all.

Key words "burned down into".

When new the platinum core is level with the insulator, after three years the
platinum core was burned out below the level of the ceramic insulator so that
you could no longer see it in normal daylight. If I had taken the time to move
the side electrode out of the way and looked down in the hole, I probably
would have seen the remnant of the electrode, but at that point in time all I
cared about was that the truck was starting again and running smooth.

--
Todd Young              WAM!NET Inc.
tyoung@wamnet.com       6100 West 110th Street
612-886-5051            Bloomington, MN 55438-2664
800-585-1133 ext.5051   http://www.wamnet.com/