1979 Yamaha 650 1 cylinder going in and out

savioursrevenge

XS650 New Member
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Location
Port Orange
Bike starts right upCarbs are good throttle cable is good spark plugs are good everything is good as far as we can tell but the bike rides and then starts to boggs down then snaps back in to it then Boggs back down and this just keeps replaying please help! It’s getting air and gas so that is not the issue
 
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