Question about 2003 Yamaha YZ 450 F

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2003 yz450f seems like im always seeing coolant dripping from the overflow? is this a common problem? where should the fluid level be?

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I've got a 03 yz450f as well and I noticed coolant comes out of the over flow hose when I'm hard on the gas,if I'm just riding around it's fine,any ideas on what would cause it to do this

Posted on May 11, 2015

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The level should only be about a quater of the way up on the over flow tank (if you have one on it) i dont have one on mine i just always check in the top of the radiator and make sure it is full all the way to the top. it also could be because there is not enough coolant mixture to water. try flushing it out and put a mixture of 75% coolant and 25% water. too much water means more pressure and thats why it could be leaking out. other then that you will get coolant coming out alot if you dont have a overflow tank.

Posted on Feb 24, 2009

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