I was told that one electrode will fire for a while until it gets hotter
than its neighbors, since as the electrode heats up, resistance increases.
This keeps the plugs running cooler and reduces erosion.

Karl Wolz

|-----Original Message-----
|From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]
|On Behalf Of Kim Brennan
|Sent: Friday, September 07, 2012 4:52 AM
|To: vanagon@GERRY.VANAGON.COM
|Subject: Re: Spark plugs
|
|you may be under the misconception that the spark will go/come
|from all 4 tips simultaneously (requiring more power). This is
|not true. The spark will come from only one tip at a time. The
|advantage of the 4 tips is that you have more choices for the
|spark to find a path of least resistance.
|
|
|On Sep 7, 2012, at 6:30 AM, Frank Condelli wrote:
|
|>        Awhile back Denis recommended these plugs: Bosch
|4477.  Upon this recommendation I ordered some from my Bosch
|supplier.  They arrived yesterday and I now see these are the
|Bosch Platinum with four tips.  Now, here's my question,
|anyone have any real life experience with these plugs in the
|1.9 and 2.1 waterboxer engines ?  I seem to recall having bad
|experience with them here.  Seems to me the ignition system on
|the waterboxer engined Vanagon's is not powerful enough to
|fire these plugs correctly.  Am I just dreaming or what ?
|-----
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