Does anyone here have a experience with these. It has a little 4cyl na engine made by kubota. I recently purchased it . It has a few issues. No one being that it overheats. It starts and runs but it over pressure the coolant system causing it to blow our the cap on the coolant reservoir. Rad is good and clean. No oil in coolant or coolant in oil. Previous owner thinks it is a head gasket problem but there are no external leaks.im thinking maybe a thermostat or waterpump problem. Idk. Any advice .
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