Kawasaki Mule Coolant Overflowing
I am replacing the water pump on a friends Kawa Mule 3010. The job is finished but now I have an issue. Once I spent tons of time bleedin the system of air and thinking I got it all out, when I drive it, within a few minutes, antifreeze is pouring from the coolant reservoir. I wasn't sure if it was circulating so I squeezed both hoses from the radiator to the engine and the one attached to the thermostat housing has pressure but the one on the water pump does not. I pulled the thermostat and noticed it said 82 degrees Celsius on it so I boiled it to test its function. It did not open until 92 degrees Celsius, or about 197 degrees F. Obviously it is out of range but my question is this, would this cause the problems I am describing? Would a new thermostat solve my problem? Is there any other tests I can do. I also checked the oil and see no signs of a blown head gasket. Ideas? Thanks
Cars & Trucks
Answers & Comments
I would be having a compression test done to confirm that there is no head gasket or cracked head problems as what you describe can only be coming from excess pressure in the coolant system from compression pressure.
Sorry cylinder
your comment of squeezing the hoses and noticing a difference if pressures suggest that the fault will be blocked cores in the radiator preventing coolant flow in the radiator. The thermostat is faulty but it is opening so that will not be the root cause of the problem. Check the radiator by doing a flow test on it . Remove top and bottom hoses Block the bottom outlet with ypou hand and fill the radiator. remove the hand and the water should empty immediately and gush out aways from the outlet. It it dosen't then consider a new radiator as the cores will be blocked/partially blocked. The difference between the cylinders is right on the maximum allowed so there may still be a problem there as well