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my sled zl 600 efi 2001, has a engine bog on low end. If I hit the gas all the way, it will stall. If I go about half its ok. I've changed the plugs and put new gas. The carb tunnels are clean. What should I check?
 

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did u check
is it running on both cylinders for sure
when u start it
feel if both exhaust ports seem the same temps
just b careful
 

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i think next i would check fuel pick up
my 00 efi doesnt have a f ilter
just a screen onthe pick up in the bottom of the tank
be real careful taking the pump out of the tank
i have been told they are expensive

just fyi
electronics can be intimdating
troubleshoot as if it were a standard engine
i have 5800 miles on my efi
i blew a f lywheel apart
and sheared a flywheel key
other than that
electronics have been flawless

one time i ran it out of fuel
what a chore to get it re primed

best starting sled i ever had
 

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efi troubles

I'm guessing that theres some thing wrong with the fuel delivery. Ive heard of this same thing happening with carbs that are jetted too rich.
 

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Check and replace your throttle seats before you go too deep. If the tang is broken or worn it will act like that. Its only a three dollar part but Ive seen guys spend hundreds at the cat dealer before they brought it to me.
 

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I'm new to this forum butm I know about the kill switch. YES, That is probably your problem. Disconnect it right under your handle bar pad. Your problem should stop. I don't know why this works or what has gone bad but I had the same problem with my 98 ZR600 EFI When I disconnected the kill switch it ran fine.
 
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