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Discussion Starter · #1 ·
I have a 02 ac zr 600 efi cc it has @200o miles on it i am having a problem i can start the sled and go full throttle and it will run fine but as soon as i let out of the gas and get back into it it breaks up and backfires as along as i keep it under half throttle it runs fine but when it does break up i can shut it down start it back up and it runs fine until i go full throttle again i have disconected the throttle saftey switch and thats not the problem im thinking tps any help would be great thanks
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