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Gap
Posted by EricG (more from EricG) on Fri, 28 Aug 2009 07:07:30
In Reply to: Plugs and MPGs, steve, Thu, 27 Aug 2009 23:53:56
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I've noticed my mileage (MPG) go down on my 9000s when I change plugs. The gap on the used plug is 1.1-1.0, and I'm regapping to .9 . This is the low end of the gap range, and is the gap recommended by Aeroguy many years ago. He worked on and has stayed familiar with the DI system in our Saabs, and says the smaller gap is easier on the DI.
I assume the larger gap generates more spark for a more efficient burn and better MPG. Difference is not much-1-2mpg, but noticeable.
Plugs seem to look great when I change them, and I'm always tempted to leave them, but for $8 it seems cheap insurance for a happy ignition. system.
posted by 68.73.21...
Posts in this Thread:
- Plugs and MPGs, steve, Thu, 27 Aug 2009 23:53:56
- Gap, EricG, Fri, 28 Aug 2009 07:07:30 <-- Viewing This Message
- Re: Gap, steve, Fri, 28 Aug 2009 08:53:55
- Re: Gap, TG, Fri, 28 Aug 2009 09:42:55
- Re: Plugs and MPGs, Noel, Fri, 28 Aug 2009 05:44:30
- Re: Plugs and MPGs, TG, Fri, 28 Aug 2009 03:45:32
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