Thanks Joel, Justin, & Tim,

I'll take you advice and pick up a new set of W7TDC's. Yeah, I could
probably just replace the one, but hey, couldn't hurt. Besides, that'll
leave me with three spares just in case. You can never have enough spare
parts....

I was mostly worried about future breakages, but I guess I must have gotten
a bum plug. Or it was dropped. Either way, it seems worth it to stick with
the them.

Thanks for clearing the air for me!

I love this list,

Don Preston
'87 Wolfy GL
~Betsy the Mp3 Bus~

----- Original Message -----
From: "Joel Walker" <jwalker17@earthlink.net>
To: "Don & Christina Preston" <betsy@UTAH-INTER.NET>
Sent: Thursday, November 23, 2000 7:44 PM
Subject: Re: 3-prong Spark plugs?

> My question is, Are these really the correct plugs for my van? I've
> always used Bosch
>
> technically, no ... that is, they are NOT the plugs that came with the
> bus nor are they the ones recommended in the owners manuals. the Bosch
> W7CC0, Beru 14L-7CU/14L-7C, and Champion N288 (not made anymore) are
> the recommended ones in the owners manuals all the way up to 1991.
>
> however!! the W7 is the ticket ... that's the Bosch heat range, so
> you're ok with those triple-prong plugs. i've been running them for
> about five years and love 'em. and i can't figure why one would break
> like that ... i've have them nearly worn out (in 40,000 miles!) but
> never break.
>
> After speaking with one of the very helpful guys at Bus Boys, I was
> informed that the 3-prongers are for '85 only? Is this right? The
> plugs seem to run great, but I'm worried about future problems (i.e.
> eletrode insulators breaking in half!).
>
> bullshit. W7 are for any bus that needs that heat range, and that's
> any watercooled bus.  i KNOW the 86-91's require the W7 range, and i
> think the 83-85 watercools do as well.
>
> I've read many posts supporting these plugs. So, did I just happen to
> get a defective one? All the plugs are clean, no deposits, etc...
>
> that's what i can't figure. wonder if the mechanics could have dropped
> it before he put it in? i've heard of that happening on Champions
> before.
>
> I'm just a bit confused. I'm going to need to replace the plug(s) this
> weekend and, of course, I want to be sure that Betsy has the correct
> setup.
>
> my advice: replace it with more Bosch W7TDC. that's the only plug i
> buy nowadays. i can't prove it, but my overall mpg has gone up 1.0 mpg
> since i put them in. that is, i can't prove it was the plugs alone
> that did it ... but i haven't changed where i drive, or how i drive,
> or how often, or anything else i can think of. and i'd swear the plugs
> smoothed out my idle a noticeable amount. i had run single-electrode
> Champions before that.
>
> good luck! hope it helps.
> joel
>
>