Question about 2004 Yamaha DT 125 R

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Yamaha dt 125 r 2001, was overheating, i took me rad off and can smell fuel in the rad, ive put a new headgasket on and thermostat housing gasket, cud any1 tell me what else to check,that would of made it overheat, many thanks, also how can i check that my waterpump is working

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Your bike is fairly new, the water pump should be fine. But you can see the water moving in the top of the radiator when the cap is off and the thermostat is open, I don't know how you got the gas in there, unless somebody is pulling a prank on you. The head gasket wouldn't do it, you would find oil in there, or water in the oil, but not gas. Gas could leak down through the pump if it was bad and get into the oil.
Fill up your radiator with premixed coolant, and check the fuel lines, filters, shut offs, etc, check the oil for water, gas, and then check the thermostat if nothing else works, it should be closed in cold water and open up when the water gets hot, put it in a pan on the stove and watch it. A thermometer will match the number on the thermostat. like 125 degrees. Or something like that.Hope this helps.

Posted on May 28, 2010


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