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47Merc · 07-06-2014, 05:54 AM

I haven't seen the plug gap discussed as yet but if you are running 25 - 28 thou you should open them up to 40 thou and give it a try. You might be suprised at the diffence. Todays crap gas needs a good wide spark to fire it properly.

07-06-2014, 05:54 AM	#30
47Merc Senior Member Join Date: May 2010 Location: Australia Posts: 362	Re: changing plugs every 100 miles!! I haven't seen the plug gap discussed as yet but if you are running 25 - 28 thou you should open them up to 40 thou and give it a try. You might be suprised at the diffence. Todays crap gas needs a good wide spark to fire it properly.