1/2 hour on a sparkplug???
Need help with this one,,, Bike is a 1981 YZ 125. I can only get 1/2 an hour on a sparkplug!!I am using NGK plugs. Change the plug and again 1/2 and hour and the plug is dead. I have checked the sparkplug with another bike and and it will not spark??. This bike "eats up sparkplugs"! They are not oil fouled they have a nice tan look to them. I have leaned out my mixtures,cleaned out the air filters etc. Is this an ignition problem?? and if it is, how in gods name is it burning out sparkplugs. HELP!