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<blockquote data-quote="2smoke" data-source="post: 157929" data-attributes="member: 563"><p>Sounds like an air leak in the rubber boots on either side. Check those for dry rot and cracks. If its getting extra air from somewhere it could cause it to surge like youve described. Also how fresh is the fuel? Sour (old) fuel will make your bike run crappy also. Remove the filter bowl and make sure that there isnt any debris or water. Pull the main and pilot (slow) jets. Spray them out with carb cleaner. Make sure the atomization holes arent clogged. Word of Caution on this. If your jets are clogged I dont recommend trying to clear them with anything other than carb cleaner or let them soak in fresh fuel the try to blow them out with carb cleaner. If you change the openings on the carb by trying to poke out debris. You risk changing the opening size or making it worse. If the jets are clogged and you cannot clean them out its just better to replace them. They arent that expensive. Id say at or near $10 for the pair.</p></blockquote><p></p>

[QUOTE="2smoke, post: 157929, member: 563"] Sounds like an air leak in the rubber boots on either side. Check those for dry rot and cracks. If its getting extra air from somewhere it could cause it to surge like youve described. Also how fresh is the fuel? Sour (old) fuel will make your bike run crappy also. Remove the filter bowl and make sure that there isnt any debris or water. Pull the main and pilot (slow) jets. Spray them out with carb cleaner. Make sure the atomization holes arent clogged. Word of Caution on this. If your jets are clogged I dont recommend trying to clear them with anything other than carb cleaner or let them soak in fresh fuel the try to blow them out with carb cleaner. If you change the openings on the carb by trying to poke out debris. You risk changing the opening size or making it worse. If the jets are clogged and you cannot clean them out its just better to replace them. They arent that expensive. Id say at or near $10 for the pair. [/QUOTE]

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