Alright, just bought a quad with a 2001 YZ426F motor in it. Got home to and took it for a ride maybe ten minutes and noticed coolant blowing out of water pump. It was not blowing out of the weep hole at the bottom, looked like it was leaking at the bolt on the right (the bolt towards the front of the bike). Went home and took the cover off and everything looked fine, o-ring, housing, etc. So being the dummy i am, i decided to put a little gasket sealer on the housing and tighten her back up thinking that would solve problem. Waited a couple hours and fired it up and let it run for about ten minutes. Started seeing some steam at the housing, the hose at the housing, and at both upper and lower hoses at radiator. Shut her off and tried again for about 5 more min and then she started blowing out of the weep hole. Sprayed harder when i gave it throttle. I imagine the weep hole is there 4 a reason, should i have coolant blowing out of it? Should it get hot while idling and blow coolant? Do i need to replace the water pump seals and what all parts should i replace while im in there? Washer, two seals, bearing and the shaft?Thanks for any knowledge you can share. Was told quad was built to be run hard and will get hot while idling, but should it be steaming, blowing coolant and i could hear the radiator gurgling. Thanks again.