7 replies to this topic

[tvalliere220 TT Gold Member]

My sled keeps bogging at 4000-5000 rpm and when u play with the throttle it finally comes out of it it doesn't do it when it's cold but once the engine heats up it starts bogging. It's so bad it won't even move. Just had the sled rebuilt Had the carb cleaned fuel tank lines flushed . The plugs are black but not soaked I guess my next plan would be to make it bog and hold it then kill it to check the plug color

[XC700116]

First thing I would check is the condition of the choke plungers, there's a rubber ring on the bottom of them and if they are old and brittle (ethonal fuels are really hard on them) they will leak fuel by and make your mixture really rich. Next thing I'd check would be the coils.

[tvalliere220 TT Gold Member]

Ok so I now know it has nothing to do with jetting it happens when I turn something starts binding up my track is adjusted right and my clutches are clean it squeaks every now and again but that's it

[XC700116]

Drive shaft bearing on the clutch side would be my first suspect in that case. Loosen up the track and see if you can wiggle the track drive shaft.

[tvalliere220 TT Gold Member]

By loosen up the track do u mean the entire skid and everything or just the track itself

[XC700116]

just the track so it takes tension off the drive shaft so you can tell if there's movement in the bearing or not.

[tvalliere220 TT Gold Member]

I checked that and it was good there was a bad roller in the clutch

[griesburger TT Newbie]

This happened to my 86 indy 600 triple. Go into the carbs. Clean them. Check float adjustments and make sure they are set properly. Then check the float needles and make sure they are all in good condition and sealing properly. After that if it doesn't work its all carb tuning. Essentially (if my prediction is correct) the sled is getting too much fuel. This problem stumped me for months and I had my mechanic look at it. He made me feel pretty stupid haha. Anyways try what i said and if that doesn't work I hope you can find a solution!