Cooling ?'s

FF-Tony

FF-Tony

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Joined
Sep 8, 2010
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Age
34
Location
Minne-SNOW-ta
Hi all!!! Good to be winter again!

Noticed today when I started up my sled that after some time idling the red temp light came on. Of course I quickly shut my sled off.

First question is, without being ridden just idling how long would it take a sled similar to mine to over heat.

Second question, this summer when I was re-jetting and cleaning my carbs I took off what I can only describe as a thermostat housing off the top of my motor (dome shaped, 3 screws holding it down, one screw in top of dome). When I removed this nothing was below it, so does my sled even have a thermostat??

99VMAX500sx

Thanks So much!!!!
 
It should idle for a while with no problems. Did you bleed the cooling system? Maybe it has air if it overheated that quick.
 
I have not, will it bleed fine if I lift the back end and take the resivour cap off and let it idle for a min. or so?
 
Just started the sled without the rad cap on, let in go almost a min and did not see any fluid running....did I let it wrong long enough??
 
So......

I raised the front of my sled, lossened the bleeder bolt and let it idle, coolant level did go down and stayed there, so I tightened the screw, topd er off, but light still coming on and heat exchangers as well as the coolant hose that goes into the top of the motor are ice cold.

The hose that does come out of the front of the block i can hear liquid in it and its warm buts its the only one.
 
I think the 500 also has the bleeder in the back. 2 bolts to take out and the seat comes off. Bleeder is under there, lift the back of the sled and do the same thing.
 
ok I will try that this weekend when I get back from work, other thing I checked was the pump, from what I can see the belt inside is spinning so hopefully its not that.
 
Just to clarify, When I bleed the bolt thats in the back sled should be running for the process or is it simply just raise the back and crack the bolt?
 
hears a little trick I used on my SXR 600.Took the cap off the hose ,had the rear bleed screw removed.I poured coolant in thru where the rad cap was..put mu mouth over the opening and blew into the line.Did this a little at a time and kept adding coolant and them blow thru it again and I hear coolant coming out of the rear bleed hole.Keep this going until there was a steady stream.Put cap on,ran sled and coolant was coming out of bleed hole and then installed the drain plug back on.Sled warmed up and all the exchangers got got and was good to go.After is cooled,added coolant in coolant bottle to the right hieght.Done deal.
With the SRX it is much easier.Since the coolant bottle in incorporated in the line,I just left the rad cap off and ran the motor and saw coolant circulating.The exchangers got hot,cap back on and any air would have come out of the bottle..no need to remove seat and bleed screw.Each to their own...lol
 
Well just came in from the garage guys, I filled thehose (rad cap spot) and started squeezing every hose i could find, sled drank probably about of quart of coolant, and I got to thinking......(uh oh)

This summer when I rebuilt the carb, for some reason I had taken off the little housing on top of the twin that houses the purge bolt, needless to say when I unbolted it coolant came out, and keep in mind this housing comes straight off the upper coolant hose that the rad cap is on. So after I put it back on I topped off the overflow and didnt think much of it. Today is the first time the sled has run since then and maybe that coolant running out should have been replaced from the rad cap and not just the resivour.....

So anyways I hope that makes sense and if it does describe what I think went wrong, well go a head and call me stupid, cause I sure feel like it :)

This weekend I am going to do that full bleed procedure.
 
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