'02 600 renegade wont go past 4000 RPM

[Suzzy-Q]

buddy of mine has a 600 renegade and it wont go past 4000 RPM unless the choke is on. seems simple but me and a frined of mine have gone over the carbs with a fine tooth comb and we verified timing and crank phase. any suggestions??

 

[kelwar]

is it the right dess key? if it is not they dont run past a sertin rpm.

 

[steveo10]

02 have powervalves?

 

[Suzzy-Q]

power valves are good and free and the dess key gives the good ol 2 beeps even switched it with another one to see if it was worse and it was.

 

[NoSecondChances]

buddy of mine has a 600 renegade and it wont go past 4000 RPM unless the choke is on. seems simple but me and a frined of mine have gone over the carbs with a fine tooth comb and we verified timing and crank phase. any suggestions??

Fuel related somehow? If it was strictly elec, you'd think it wouldn't go over 4000 at all. Fouled plug or busted wire? Puzzling that it will rev with the choke on. Sorry, I don't have much experience with this motor.

 

[schlaudy]

Check carb boots, they are known to rip and run lean, choke em and they rev. I have seen that problem. or possible vaccum leak somewhere in system.

 

[deepdiver]

buddy of mine has a 600 renegade and it wont go past 4000 RPM unless the choke is on. seems simple but me and a frined of mine have gone over the carbs with a fine tooth comb and we verified timing and crank phase. any suggestions??

Carb boots can cause this as well as some others. I had a simular problem..did you drain float bowls and check tank for water? Pull the drain bolt out of the bottom of the carbs and drain into a glass jar...you should be able to easily see if there is water..if there is you need to check tank as well. Also I recently had a very simular problem and it turned out to be a small flake of some substance got into the T connector on the fuel line between the carbs..check to see if you have a cylinder dropping out and which one it is. Good luck there is a lot more that can cause this symptom.