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Electronic fuel injection 101

197K views 65 replies 38 participants last post by  Eric14570 
AKStew, Thank You! I know your Electronic fuel injection 101 thread is about 3 years old but it is GREAT! You've given me enough information to begin to troubleshoot my 2006 Sportsman 500 EFI. I made a print out of all the information you provided that is relevant to my Sportsman 500 H.O. EFI. I was just staring with connectors when I read your 80% statement. The problem I have is cutting out and backfiring through the exhaust. Sometimes it is all I can do to keep it moving at walking speed by pumping the throttle.
I have a service manual (electronic copy) for a 2008 Sportsman 500 EFI but haven't found one for a 2006. I'm hoping the information on the sensors is close enough. There are many free ones offered but still can't find one for my 2006 Sportsman 500 HO EFI. If you know where to find one ... THANKS! Jerry
 
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