When I replaced the plugs on my 85 I thought I'd have to gap them too.
The plugs the local VW haus sold me have three prongs evenly spaced around
the electrode.  No gapping there.  I've been wondering the whole time if
they put the wrong plugs in before I bought it or I was sold the wrong
plugs.  Volkscafe sells 3 prong plugs as: "What VW sold the van with,
although many owners feel they have no advantage over the regular plugs"

I don't have enough information on the topic to come to a conclusion, but my
van starts, idles, and runs really well.

-Russell

>From: Aerowolf <aerowolf@GMAIL.COM>
>Reply-To: Aerowolf <aerowolf@GMAIL.COM>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Proper gap for spark plug 85 1.9L?
>Date: Fri, 9 Jul 2004 19:26:47 -0500
>
>What's the proper gap for spark plugs on a 1985 1.9L wasserboxer?  I
>can't find it in my Bentley manual anywhere.
>
>(The inspection of the spark plugs shows they're currently operating
>at a gap of approximately 2mm, though I don't have a gapper handy for
>specifics.  My engine is running rich, which is leading me to evaluate
>the ignition system for problems such as possibly a weak coil or a bad
>HCU/hall sender.)
>
>-Kyle

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