Over Heating

[Bobum Man]

My sled started over heating, I couldn't do anything to lower temp. Scratchers down tried diff speeds, rode through snow on side of the trail and still over heating. I stopped and saw my coolant looked over filled. After it cooled down, I drained some coolant and let it run with the coolant cap off. after the thermostat opened I could see air bubbles come up (for about 4 minutes at idle). Once it cycled through my coolant level was low. (probably shouldn't have drained any.)

This did fix the over heat problem but I'm concerned air is getting in the system. Anyone else have this or know of what I can look at to stop from happening again?

Thanks in advance.

 

[007sevens]

Have you done any engine work that required you to drain the fluids and refill after complete????? Could have an air bubble. Try lifting front end end higher than the back end and leave the cap off over night.


Sticky Thermostat would do this as well..

My sled started over heating, I couldn't do anything to lower temp. Scratchers down tried diff speeds, rode through snow on side of the trail and still over heating. I stopped and saw my coolant looked over filled. After it cooled down, I drained some coolant and let it run with the coolant cap off. after the thermostat opened I could see air bubbles come up (for about 4 minutes at idle). Once it cycled through my coolant level was low. (probably shouldn't have drained any.)

This did fix the over heat problem but I'm concerned air is getting in the system. Anyone else have this or know of what I can look at to stop from happening again?

Thanks in advance.

 

[Bobum Man]

No but its a new sled, just 2 rides on it. First day was seeing high 150s and kept an eye on it. 2nd day up to 190 then shut it down. I believe DET is 220. Hoping its just air bubbles. I will lift the front and see how that works.

Thanks

 

[freeride73]

Yes lift the front end about 2-3 ft and run the sled with the coolant cap off. Let air out and fill with coolant. Should be good to go,

 

[LUCKY 7]

what kind of sled is it?

My sled started over heating, I couldn't do anything to lower temp. Scratchers down tried diff speeds, rode through snow on side of the trail and still over heating. I stopped and saw my coolant looked over filled. After it cooled down, I drained some coolant and let it run with the coolant cap off. after the thermostat opened I could see air bubbles come up (for about 4 minutes at idle). Once it cycled through my coolant level was low. (probably shouldn't have drained any.)

This did fix the over heat problem but I'm concerned air is getting in the system. Anyone else have this or know of what I can look at to stop from happening again?

Thanks in advance.

 

[05765scott]

I switched to ethonal on dash and lowered temp right away. Retards your timing and dumps more fuel I believe

 

[Bobum Man]

Thanks everyone, turned out to be air bubbles. I think they're all out, put 80km on today with not problems!!!