When I used 'em there was no performance or milage increase. They just lasted forEVER. As near as I could tell, whichever electrode had the highest conductance got the spark. When it wore to where another electrode had more conductance, the other got the spark. That increased the effective life of the ground electrode by a factor of 3. The center electrode gradually changed from a circle to a rounded triangle. As I mentioned, that took a long time. Ed Jason Willenbrock wrote: > hey all, > > what is the benefit, if any, of the bosch 3 electrode spark plugs for > vanagons? better fuel efficiency or what? and how do you set the > gap? what should the gap be for a 90 vanagon? > > jason > > 90gl > |
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