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Posted by David [76.103.64.254] on Thursday, July 29, 2010 at 01:42:26 :
In Reply to: Re: Spark Plug recommendation for the 251 posted by M Fanoni [166.190.126.156] on Wednesday, July 28, 2010 at 23:57:47 :
Not so. If you use a plug thats too hot you will burn the electrode off. I used an AC R45 plug and had problems so went to a R43 which is cooler. The hotter plug will stick further into the combustion chamber.