Calling All Overheaters - UPDATED

[billymx815]

and...just to give you an idea...
it was 26 degrees today...
I spent a couple of hours on the lake today...minimal snow and about 30% coverage....0-110mph runs over and again...never overhaeated once..

SJ - Just funning...I'm jealous

 

[**sj**]

here's another possible scenario ive considered with these sleds...the tunnel icing..well if a chink lets loose and whips around and hits the heat exchanger...the dent could prevent proper flow!

 

[loudelectronics]

here is another one for you. have you cleaned your air filter lately? A severely plugged air filter such as one that has been in cat tails will do it as well.

 

[bradthebest]

you most likely have a air lock or stuck thermostat .

if you want to get the air out the best way to do it is with this .

http://www.mityvac.com/hq_images/MV4535.jpg

http://www.mityvac.com/pages/products_cse.asp

you can purchase it at napa .

i use it on anything from sleds and bikes to 19L diesels .

 

[grizztracks]

does the radiator fan work?

 

[nytro23]

overheat

after checking thermostat, fill unit up and park it on a hill overnight, pointing upwards. Shake it around a little but leave it overnight. Be sure your fan is working. They will under the right conditions overheat from time to time. Low snow, ice daming in front bulkhead cooler. I got knocked out of the Iron Dog race due to overheating. A stick went through the cowling, nicked a coolant hose off of the carbs. The stick actually scraped bark into the hole of the carb coolant line and plugged it up...

 

[billymx815]

does the radiator fan work?

I've never heard the fan run...but I also don't no how to check it. Hopefully the dealer will look at that.

 

[billymx815]

here is another one for you. have you cleaned your air filter lately? A severely plugged air filter such as one that has been in cat tails will do it as well.

I have the K&N's and they are brand new...less than 250miles on them. They look brand new (clean).

 

[billymx815]

here's another possible scenario ive considered with these sleds...the tunnel icing..well if a chink lets loose and whips around and hits the heat exchanger...the dent could prevent proper flow!

Agreed...Not to mention the front heat exchanger is too small/narrow for the amount of heat these sleds produce.

 

[billymx815]

you most likely have a air lock or stuck thermostat .

if you want to get the air out the best way to do it is with this .

http://www.mityvac.com/hq_images/MV4535.jpg

http://www.mityvac.com/pages/products_cse.asp

you can purchase it at napa .

i use it on anything from sleds and bikes to 19L diesels .

Looks like a nice kit. I thought these sleds operated with a pressurized system that bleeds the air on its own. Is that not the case?

 

[billymx815]

http://www.ty4stroke.com/viewtopic.php?t=80313

its 100$ but it might cure your problem .

or

http://www.ty4stroke.com/viewtopic.php?t=79925

i have never had an overheating problem on my mtx . i have no additional venting yet . i will be purchasing the top one though .

I have the top vented...Although it is not made by Roest it is the same principle. A lot of heat escapes through the top vent for sure but not sure its enough.

 

[billymx815]

UPDATE...I forgot to add this from my experience yesterday. When I pulled over the last time (overheating) I shut the engine off and let it cool down a bit. The coolant was spilling into the overflow container and also spilling onto the ground. When it was cool enough I cracked open the radiator cap and it made a horrible hissing sound and bubbling sound. When that happened all the coolant in the overflow container drew back up into the radiator leaving nothing left in the overflow. What does this mean and is it normal?

 

[4strknytro]

What did it look like in there when you pulled the cap? When you pulled the cap it just sounds like the system holds pressure and was boiling the fluid. I had a gritty gunk in there when I opened mine up.

 

[billymx815]

What did it look like in there when you pulled the cap? When you pulled the cap it just sounds like the system holds pressure and was boiling the fluid. I had a gritty gunk in there when I opened mine up.

Honestly it looked somewhat clean with one exception...There was some white filmy particles.

 

[enticeraised]

Order of troubleshooting: check for air pockets, check thermostat, pull rad to flush, lastly check water pump. Simple fix...I have over 7000km on two of these sleds in ALL conditions-never been an issue.