Running Issues 2011 800 Pro

[ENDO1]

Took my sled to the Dealer last week, over the past few rides it has developed
a bog when trying to rip the throttle to spin the track in low snow conditions, notice it would go from 6000 rpm to about 7200 and have a dead bog, it all so started sounding like it was running rich on the bottom. Dealer checked and said it threw a code that indicated a stuck throttle, said it was a bad TPS, they installed a new one but the sled still will not run right, the best way to describe it is as an intermittent problem, will act real dogie and has a funny and ruff burble sound on the bottom and will only reach about 8050 rpm at best, and will sometimes for short periods run good and smooth. have all ready checked the clutches, plugs, and has a new fuel filter this year, and I only run non ethanol fuel. Taking it back to the dealer on Tue, Any Ideas what me be wrong ?

 

[Flygti32]

Your running non ethanol fuel but is your plug set on the premium pin? Also I would get your dealer to meter your EGT sensor, not just hooking up the digital wrench, make sure the right voltage is getting to it.

 

[Murph]

Powervalves?

 

[ENDO1]

I have the non ethanol plug in, will mention to the dealer about the egt, just trying to collect all the info I can be for going back to the dealer.
Thank You.

 

[chadweiser]

have you tride the ethanol plug to make sure that the non is not the problem.

 

[ENDO1]

I have tried both ethanol and the non ethanol plugs no change.

Murph the dealer did look at the mag side valve but not the clutch side,been thinking about the same thing, will suggest that to them or look at it my self, have notice something that sounds like a rattle noise that goes up down with rpm on the clutch side of the motor and is getting more noticeable with each ride. I have checked the clutches and all looks good, the sparks plugs are reading real dark and have deposits on them, tried a new set seem to help a little a first but not much.

 

[AKSNOWRIDER]

run a compression test..betting it is down on compression...look really close at the rollers in the primary if you are getting a rattle on that side....

 

[gcmci]

Injectors are failing

 

[ENDO1]

AKSNOWRIDER, The dealer check the engine said everything was perfect, I opened up the clutch and rollers are great, rattle might be the wrong way to describe the noise, it changes with rpm and seems to get easier to here the farther I ride, it is different than the usual clutch noise.
The dealer said they had one in last year with the same problems and ended up putting new injectors and a new stater before it would run right. My sled has 1700 miles on it, this started about 4 rides back and has become worse with each ride.

 

[AKSNOWRIDER]

it very well could be injectors...I would still check the basics before I condemned the injectors though...

 

[diesel5]

I have the same issue, my sled bogs down to 6300 rpms it started happening on the trail as well as pulling hard. This first happened last march. so far they have replaced fuel filter and pump. Then this year injectors and computer. Took it out today and had the same problem, i tried both resistors and it was worse with the ethanol resistor. Taking it back in on Tuesday..... hopefully then can fix it this time. When pulling hard today i was only getting 7800 rpms pretty low?

 

[wellfed777]

ENDO1
i'm betting its injectors
good luck

 

[5.5switchback]

Throttle freeplay if too loose will cause a bog. Just something easy to check.

 

[ENDO1]

Diesel5, Have them check the stator, that's what my dealer told me fixed the one he had in last year and it was running exactly the way yours and mine are.They told me it had something to do with low voltage to the injector's.

 

[ENDO1]

Thank You everyone for your input, lots of info to take to the dealer, will let everyone know what we find.

 

[pokey76]

Sounds very close to the problem I had. Cracked stater. Replaced it , problem gone.

 

[slim800]

Mine is having the same issues, they are going to replace the injectors on thursday . How do they check the stator to find out if it is bad? It runs good for the first few miles then the more it warms up the worse it runs.

 

[mac770]

I'm having the same problem on my 2012 800. Is your check engine light coming on? Mine came on yesterday. I have not called the dealer yet.

 

[slim800]

yes my check engine light came on and my motor started to stutter not even close to my rev limiter.

 

[ENDO1]

No check engine light or codes. Took my sled to the dealer today, all they said was that Polaris wants them to start with checking all wires, clutches, power valves, then proceed on to other things, did not here back from them.