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Mule overheats
A friend gave me a Kawasaki Mule, it runs great except for a major overheating problem.
It heats up...no circulation of coolant. When top hose is "relieved"--that is, when a clamp is loosened or the radiator cap cracked and burped--circulation begins. We detected this by feeling the pipe running below from the engine to the radiator. It stays cold...no circulation...until the air lock is broken...and then it warms. The radiator cap has been replaced, the hoses checked, the pump checked, the radiator flushed.... I have even driven it without a radiator cap...and yet it still overheats.
Any suggestions?
Thanks!
Dick Day
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Mule overheats
Yes, it does have a fan but am now seeing that it only comes on after we have burped the air out of the system.
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Mule overheats
The water pump was checked by the dealer at the same time they installed the new thermostat.
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Mule overheats
Thanks. I believe what you found describes the problem exactly. As soon as the temps climb above zero, I'll try what your post suggests 
Dick
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Mule overheats
Well, I've tried everything suggested and still it overheats. I removed the thermostat so a sticking thermostat can't be the problem. Until I 'burp' the upper hose, no water is reaches the fan switch so the fan never kicks on.
Without yanking the water pump out of the engine, is there any way to test to see if it's working?
Any other suggestions?
Thanks!
Dick Day
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Mule overheats
Yes, that's what appears to be happening. Coolant never gets to the fan switch until the air pocket is released and then coolant starts flowing.
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Mule overheats
Thanks! As soon as it warms up (weather, not Mule!) I'll try it.
Dick
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Mule overheats
Update... As I read the manual the other night...I know: a desperate last resort...I ran across something curious while looking for where the reservoir is. It has a required level. Hmmmm.... Well, I just found the reservoir...under the seat...and...it's empty. So I brought it up to level, topped off the
system at the radiator (at another filler cap at the front, NOT the same as the filler cap at the engine and res) and let it warm up. It does seem to be circulating. I ran it for a while, let it warm up and then drove it around pretty hard. No red light. No overheating stink.
It still seems like it's pretty hot. Do these engines run hot?
Again, thanks for your help.
Dick
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Mule overheats
Thanks, I'll try it again.
Dick
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