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Dirt Bike Brands - Other
cr 125 fouling plugs
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[QUOTE="rmc_olderthandirt, post: 1294468, member: 68872"] It is really quite simple. It is either running too rich, running too much oil or the plug is too cold. Stock jetting may not be correct for the current configuration of the bike. Changing the pipe, for example, will often require a change in the jetting. Operating at a different altitude could require a different jetting. The bottom line is that you need to go through the proper steps to establish proper jetting. The proper steps include starting with a fresh plug, running under a typical load for a period of time, then pulling the plug and examining the base of the center insulator. As stated above, do a search on this forum it has been covered many times. The gas/oil mix will influence the fouling but you should be able to run without fouling anywhere from no oil down to 24:1. Using a good grade of synthetic two stroke oil may help. If the jetting is correct then the plug is probably operating too cold. In order to stay "clean" the plug has to operate at a minimum temperature. If it operates below this "self cleaning" temperature the deposits will build up and eventually foul the plug. If you are already running the hottest plug available (if it is an NGK it will be the lowest number, ie, BR7ES) then I would suspect that you are simply not riding the bike hard enough. Most bikes don't have thermostats on the cooling system so if you ride slow the engine doesn't heat up to the intended operating temperature. Just a few minutes of hard riding every 1/2 hour or so should burn off the deposits and keep you going. Rod [/QUOTE]
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Dirt Bike Brands - Other
cr 125 fouling plugs
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