Marlin Posted December 12, 2006 Share Posted December 12, 2006 I picked up a yz 250 and Im having trouble with the plug fouling. I ran it for about five miles today then it quit. I checked the spark and had none. Im mixing the gas 42-1. I just picked up the bike and Im just now going through it. Its been a few years since Ive had a bike. The last yz I was a 78' 400. Its a upgrade for me having a 91. Should i rebuild the carb? Is there an adjustment I can make to solve this problem? Marlin Link to comment Share on other sites More sharing options...
Willenium Posted December 12, 2006 Share Posted December 12, 2006 What condition is the plug in when you take it out? Often the mixture is off. Link to comment Share on other sites More sharing options...
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