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JPRICE1981

2000 quadmaster back fires after warming up

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help needed please my quad starts up great but back fire when i give it throttle ! It runs great for about 30 to 60 sec or until it starts to get warm . could i get a idea of what you guys think this quad has had me stumped for days i have changed the cdi, carb, plug and thought i had it licked until i put everything back together

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