Polaris update

[dmkhnr]

I can't even imagine the sled being able to run with 1 liter of oil in the tank besides the injection...LOL.

Not sure why I would say the sled runs like a top either then. Here it is again from a post in this thread:

Engine Oil Break-in Recommendation
Polaris recommends using Polaris Semi-Synthetic Oil for premixing the first tank of fuel at 40:1 and for the first fill of the oil tank.

Straight from the 2010 Owner's Manual Addendum (800 Models)

Lets do the math. Tank has a capacity of 43 liters. Add 1 liter of oil, that's about a 43:1 ratio. Close enough to the 40:1 Polaris is recommending.

That seems like way too much oil. 40:1 in the tank, and then the oil injection is mixing 30:1. That makes it like a 15:1 mixture. To me that statement says to fill the fuel tank to the top, and the oil resivoir to the top. Make sure the oil injector is adjusted at 40:1 ratio and ride it. The motor is going to burble, studder, burp and hesitate with a 15:1 mixture.

 

[600xc4me]

I have always ran 40:1 premix when breaking in a new motor, for two tanks. It's seems like a lot to me too, but it's what my dealer says to do so that's what I do. I have only fouled two sets of plugs while breaking in 4 motors on 40:1. Not bad considering how much oil you are feeding the thing. On my D8 when I pulled my exhaust valves to check my pistons they were coated with oil. Turn the primary to get them moving and there was always a nice layer of oil on them. Can't be bad having the extra oil in there to break it in. Still runs pretty good. But there is a noticeable improvement on performance once you switch back to non premixed gas.

 

[gerrman]

That seems like way too much oil. 40:1 in the tank, and then the oil injection is mixing 30:1. That makes it like a 15:1 mixture. To me that statement says to fill the fuel tank to the top, and the oil resivoir to the top. Make sure the oil injector is adjusted at 40:1 ratio and ride it. The motor is going to burble, studder, burp and hesitate with a 15:1 mixture.

I hope the oil injection is not at 30:1. I know my son's 05 M7 was very rich on the oil, in and around 30:1. We reset the pump to mix at about 40-45:1. Though it already ran well, the oil change cleaned it up a little more. My 08 D8 was very stingy on oil consumption. Not sure if that contributed to the engine failure at 600 miles? It ran for another 1050 miles at the same setting for oil with no more engine problems. Although I never did actually check, I bet the oil was mixing at over 50:1 at least. This weekend will be my third half tank+ of gas through my 09 D8 163, so the premixed oil should be getting to be some where between 150-200:1. In other words, almost gone. Good luck to everybody on their engine break-in. I hope all goes well and run as good as mine has during this period. Snow will be even better this weekend than last. There should be 1.5' of new at 3500'+.

 

[Mag]

Turns out the exhaust side of the mag piston and intake side of the pto piston are scuffed. They believe it is an intake problem, don't know what part of the intake system but that's where they think the problem is. Polaris mothership won't let them put anything back together until they find what the problem is.

 

[cascadesnowjunky]

My delership told me mine had an o-ring pinched that seals off the injector. I am not sure if that could make it run like it was or make the pistons wear like they did. They told me to run my pistons seeing how there was no deep grooves or really bad scratches. I pick it up tomorrow and hopfully will get to ride it this weekend. We will see if it lives?

 

[theultrarider]

Turns out the exhaust side of the mag piston and intake side of the pto piston are scuffed. They believe it is an intake problem, don't know what part of the intake system but that's where they think the problem is. Polaris mothership won't let them put anything back together until they find what the problem is.

Good luck with that Mag. Sounds like you may be riding the ol edge for a while. If it was an intake problem, you would have thought that they would have have found it last year with all the trouble you had. Are they will to start throwing parts at it and crossing their fingers?

 

[skibreeze]

My delership told me mine had an o-ring pinched that seals off the injector. I am not sure if that could make it run like it was or make the pistons wear like they did. They told me to run my pistons seeing how there was no deep grooves or really bad scratches. I pick it up tomorrow and hopfully will get to ride it this weekend. We will see if it lives?

There are 2 o rings on each injector and it takes a little work sometimes to get the rail in. Had to fubar the install to affect the injector though.

 

[Tdubbs]

Mag have you checked your t-stat?? The little bypass hole in the thermostat can become plugged and the mag side will not get any coolant until the thermostat opens not saying this caused your issue but certainly could have contributed to your problem. I too am hoping that this fix is a 'fix' and not just a bandaid because my d8 made me nervous that I was going to be walking home everytime I was out last year (although it did never let me down).

 

[Meat Head]

Turns out the exhaust side of the mag piston and intake side of the pto piston are scuffed. They believe it is an intake problem, don't know what part of the intake system but that's where they think the problem is. Polaris mothership won't let them put anything back together until they find what the problem is.

I bet the mothership is sh*tting bricks... 75 miles and there fixed 800's are showing up blown up on the net... Way to go polaris, don't let them pull the wool over your eyes with some bullsh*t story. Find the facts and report them to us....We can handle the truth, I think.....

 

[OLD GOAT]

could this be it?

I am not a mechanic, but here is my theory on the motor problem. It seems that some 800's have just run fine for 2 seasons & some are P.O.S's. (mine is classifed as a P.O.S.) I had my motor go down twice last year, had new pistons, cylinder block & head & reflash each time. I just got my 4th set of pistons last week. I know of dragons, even turbos, that have had no problems. for 2 years. Could some of the motors have cranks that are out of balance, or manufactured wrong so the pistons are scuffing the cylinders no mater how many rings there are? my sled was stock. On the bright side. I did put a quart of oil in the tank and have ridden it a couple times last weekend on the couple acres I have since it snowed last weekend. (maybe a whopping 15 minutes each time). So far it starts & idles fine, seems to rum ok without flooding. time will tell.

 

[milehighassassin]

I am not a mechanic, but here is my theory on the motor problem. It seems that some 800's have just run fine for 2 seasons & some are P.O.S's. (mine is classifed as a P.O.S.) I had my motor go down twice last year, had new pistons, cylinder block & head & reflash each time. I just got my 4th set of pistons last week. I know of dragons, even turbos, that have had no problems. for 2 years. Could some of the motors have cranks that are out of balance, or manufactured wrong so the pistons are scuffing the cylinders no mater how many rings there are? my sled was stock. On the bright side. I did put a quart of oil in the tank and have ridden it a couple times last weekend on the couple acres I have since it snowed last weekend. (maybe a whopping 15 minutes each time). So far it starts & idles fine, seems to rum ok without flooding. time will tell.

That sucks! I didn't know you had a Dragon. I just bought an Assault. Anyway, what kind of riding do you do? From what I read there have been more problems out in the midwest and the west/mountains. It almost sounds like those riders that stay in one RPM too long have been the ones that have the most problems.

Also, not trying to call anyone out but who did you buy your sled from or who did the setup? (you don't have to post that if you don't want and even if you do, that doesn't mean it is a dealer issue, Polaris is obviously doing a recall for a reason and it's not poor dealers).

 

[PalousePoo]

check eng light coming on

put 70 miles on my new 09 d8 today. Has the 2010 update. At 60 miles, I saw the check eng light come on for about a second or two, then go off. It did this about 4 times within two miles, then stayed off. Sled run well during this, coolant temp was 124. Before this happened, sled took about 5 pulls to fire, one time. Eng warm, had been starting w/ one pull. Will take into the dealer tues morn and read codes, if any. Otherwise, sled ran strong and clean.

 

[milehighassassin]

Has anyone had to change their clutching for the new update?

 

[Cardiac Kid]

Mag
Did your pistons just have scuffing, and no eroding in the crown from detonation? Also how did the ring lands look, no eroding there either? My keyboard mechanic's would say, lube or engine temp issue. You said the mag side ran hotter (exhaust temp) than the PTO. You’re running a single pipe right so it isn't something in the pipe restricting flow to that side? PTO scuffing on the intake side, is usually a lube issue because it will never be warmer than the exhaust side so it should never be tighter there do to heat.

Some more very strange symptoms on these sleds. Keep us up to date on what they find.

 

[Mag]

Mag
Did your pistons just have scuffing, and no eroding in the crown from detonation? Also how did the ring lands look, no eroding there either? My keyboard mechanic's would say, lube or engine temp issue. You said the mag side ran hotter (exhaust temp) than the PTO. You’re running a single pipe right so it isn't something in the pipe restricting flow to that side? PTO scuffing on the intake side, is usually a lube issue because it will never be warmer than the exhaust side so it should never be tighter there do to heat.

Some more very strange symptoms on these sleds. Keep us up to date on what they find.

Just scuffing Mag side exhaust, bad pto side intake. Single pipe.

Dealer called today, when the update was done the 09 cylinders were honed, it gets new cylinders, pistons, injectors, reeds and head this time. The dealer can't find a cause that they will admit too and I had to answer a whole bunch of b.s. questions for the mothership. i.e. engine temp. egt temps, fuel octane and engine mods.

 

[theultrarider]

Just scuffing Mag side exhaust, bad pto side intake. Single pipe.

Dealer called today, when the update was done the 09 cylinders were honed, it gets new cylinders, pistons, injectors, reeds and head this time. The dealer can't find a cause that they will admit too and I had to answer a whole bunch of b.s. questions for the mothership. i.e. engine temp. egt temps, fuel octane and engine mods.

I sure hope they found something that they are not admitting to.

 

[AKSNOWRIDER]

Just scuffing Mag side exhaust, bad pto side intake. Single pipe.

Dealer called today, when the update was done the 09 cylinders were honed, it gets new cylinders, pistons, injectors, reeds and head this time. The dealer can't find a cause that they will admit too and I had to answer a whole bunch of b.s. questions for the mothership. i.e. engine temp. egt temps, fuel octane and engine mods.

mag, I still think it was an injector issue..high egt would support that at idle...bet she rips now....did you get parts yet?

 

[SmokeyBear]

Same dealer (not Curtis), and ok they gave me a little strip of paper that stated Polaris "might" not warranty engine problems (not specifically this problem) if I continued to run the SLP single. They said the can was fine but not the pipe. To me that says they will probably deny any engine problems if you didn't remove it post update. Call me crazy, but why bother recommending that if there wasn't something to it. I want to be wrong here because this really sucks for us. I'm usually an optimist, but things aren't looking good at this point.

It's because the download is mapped for a stock pipe and SLP can, any other configuration is (possibly) outside of the parameters of what the mapping can adjust for.

 

[Flange509]

Ran mine this past weekend for about 35 miles, just on the trail, ran very strong in the mid range and got 8150 rpms on some straight shots.Overall felt very good.After reading this I took a look at the pistons and they looked good, no blow by from the first ring. I'm runnin this one in on good ol blue oil for at least the first tank.Did several heat cycles waiting for snow.

 

[Meat Head]

It's because the download is mapped for a stock pipe and SLP can, any other configuration is (possibly) outside of the parameters of what the mapping can adjust for.

Or polaris did not fix the problem...... Hum, thats my vote so far.