2012 assault questionable issue?

[cbc24]

Hey so I purchased a 12 polaris assault brand new this year, for most riding it stayed within 125-140F but ive got 255miles on it now and today it was heating up alot faster, I was hitting 140 on the trail which it never used too, even with scratchers down the heat rose. I had a hard time keeping it under 150F all day and even hit 180F at times. I did little road riding but even following someones marks in the feild the temp would climb. Coolant is ok and everything apears fine! What is normal for these? Im concerned. Btw we got like 3 ft of snow,

 

[snowman80]

My '11 runs 125 most the time. The highest I've ever seen it was 140 on a rock hard trail last year.

 

[mike_s]

180 is far too hot. I dont like to see anything much above 120. Might try replacing the thermostat.

 

[cbc24]

shouldnt that be warranty ive only owned the damn thing 2 months

 

[mike_s]

Yes, i would say so. Take it in and tell them your troubles.

 

[snowman80]

Are the heat exchangers in the tunnel getting warm? Maybe there's an air bubble in there and it's not circulating properly

 

[die hard poo]

I would agree, if there is adequate amount of snow to cool the sled, and you weren't at 125*F, then you have a vapor locked system. How I like to purge the system is:
-Raise the front of sled higher than the rear
-Loosen the overflow reservoir cap to prevent system to pressure up
-Start engine and let warm up higher than thermostat setting(125*)
-Crack bleeder on top of engine where the radiator hose goes out.(I wrap a rag around the thermostat housing to catch the coolant)
-Watch your coolant levels in your overflow reservoir and add to it as needed. You should start to see turbulent flow once the thermostat opens up, this is a good indication of flow.
-Monitor temps of the rear coolers and see if they get hot on both of them, this also will let you know you have good flow.
-Repeat until you are confident you have all the air out of your coolant system.

 

[cbc24]

yeah ill tinker with it, the thermostat really opens at 125? holy thats low

 

[akgiauque]

I had a similar issue early season last year. Elevated, tipped ect an got rid of the air bubble, never saw a temp over 134 after that.

 

[jtt454]

As long as you have the front end higher than the back theres no need to crack the bleeder, just have the coolent cap loose so the air can escape. Less messy this way!

 

[mike_s]

yeah ill tinker with it, the thermostat really opens at 125? holy thats low

120 was my understanding...