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**the codfather** · 30-04-2007, 04:39 PM

I replace mine every 4 to 5 months Wayne.I suppose mileage wise,.......4000ish.The plugs are always in pretty good condition when I change them,its just a personal thing I suppose.I cant really answer you accurately.It doesnt really seem to affect them by using different driving styles.Most of the time I have to admit I push the car pretty hard,but Ive never had a plug fail me yet.
Another tip I can pass on though is,if you are using,say,..10mm Kerr Nelsons.......increase the gap a little for maximum performance.
I know this sounds backwards,using bigger diameter leads AND increasing the plug gap,but it does make a difference.

30-04-2007, 04:39 PM	#8 (permalink)
the codfather Junior Member Wrench Pro Join Date: Jun 2006 Location: Polruan,Cornwall Posts: 25	I replace mine every 4 to 5 months Wayne.I suppose mileage wise,.......4000ish.The plugs are always in pretty good condition when I change them,its just a personal thing I suppose.I cant really answer you accurately.It doesnt really seem to affect them by using different driving styles.Most of the time I have to admit I push the car pretty hard,but Ive never had a plug fail me yet. Another tip I can pass on though is,if you are using,say,..10mm Kerr Nelsons.......increase the gap a little for maximum performance. I know this sounds backwards,using bigger diameter leads AND increasing the plug gap,but it does make a difference.