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hey guys i have a 2007 polaris predator 500 with a trinity stage IV exhaust system on it and the jetting has been set to 170 on the main. would i be considered running lean? i took out my old spark plug, which had a peanut butter color, and my new spark plug is a dark gray on the base but theres no white on it.

Posted

Is the first plug from before the pipe and jetting? Either way, it sounds like you are ok on the jetting based on your description of the plugs. As long as the insulator has a good amount of brown or gray color to it and there is no white left, you should be ok.

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