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Message: <blockquote data-quote="skidsteer.ca" data-source="post: 2562" data-attributes="member: 307"><p>You need to get your hands on a pressure tester for cooling systems, usually just a fancy rad cap you put on and a hand pump. You pump a few psi into the sytem and look/listen for the leak. Engine stays off. You could improvise with a air compressor and a pressure regulaor. I believe the cooant drain cock on the kubota engine is just common 1/4" pipe thread. Remove it by unscrewing it from the block and hook the air regualtor into there, connect to your compressor and set regualtor at 4 or 5 psi (must be below pressure rating of rad cap) listen for the leak. Good uck Ken</p></blockquote><p></p>