problem with 07 rev

[sledder325]

i have an 07 rev with an 08 motor anyway lately when i am doing a climb the first two climbs i do it runs holds rpm and climbs great but after that it seems on my third climb when i am in the climb it will start sputtering and not running right so i go back down shut it off let it cool a bit, then go again same thing first couple of climbs runs and sounds great but on the next climb again sputtering sounds terrible rpm dropping just not running right at all, again shut it off let cool first couple of climbs sounds and runs perfect then after that runs horrible anybody have any ideas what it is or anybody ever experienced this type of problem before any input is appreciated

 

[team dirt]

Hard to say but maybe it is more clutch related than engine and after a couple pulls your primary is heating and with a bad bushing you could be loading engine to hard. Just a thought.

 

[Barker]

Had that exact problem with 2003 it was the clutch fingers sticking and over loading engine except mine did it on the trail in,

 

[Bnorth]

Yup sounds like overheating the clutch. Probably needs a thorough service and some venting on that side doesn't hurt either.

 

[sledder325]

thanks for the suggestions, I just had the bushing on the sliding half replaced and now has 300km on it plus i do do regular service and inspection plus cleaning of the clutches, if the motor is overloading would the rpm be way up there just asking as i am not sure.

 

[SidewaysInto3rd]

Could be heat soak. The factory single ring pistons are known for that issue. Not enough surface area to dissipate head from your piston to your cylinder/cooling system. Piston overheats and engine loses power.

Time for an RKTek drop in kit !! mine had the same issue last year, dual ring pistons and climbs all day long like a meth'ed out mountain goat

 

[sledder325]

Could be heat soak. The factory single ring pistons are known for that issue. Not enough surface area to dissipate head from your piston to your cylinder/cooling system. Piston overheats and engine loses power.

Time for an RKTek drop in kit !! mine had the same issue last year, dual ring pistons and climbs all day long like a meth'ed out mountain goat

i was kinda thinking today ya maybe it is the knock sensor kicking in, i do have almost 4000km on the motor and never has done this before

 

[powerteker]

Could be heat soak. The factory single ring pistons are known for that issue. Not enough surface area to dissipate head from your piston to your cylinder/cooling system. Piston overheats and engine loses power.

Time for an RKTek drop in kit !! mine had the same issue last year, dual ring pistons and climbs all day long like a meth'ed out mountain goat

Yes do the drop in kit and replace anything worn in the clutches gear it down put a pipe on it and Destroy new stockers!

 

[sledder325]

Yes do the drop in kit and replace anything worn in the clutches gear it down put a pipe on it and Destroy new stockers!

actually the way my sled is set up no rev comes close to it but anyway i think i am going to try a new dpm hopefully that is what it is

 

[Dmf]

actually the way my sled is set up no rev comes close to it but anyway i think i am going to try a new dpm hopefully that is what it is

apply 12 volts to your dpm and listen for the solenoid, most likely its not the DPM