Question about 2003 Yamaha YZ 250

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I have A 2005 YZ250 and during the other day I was leaking antifreeze out of the bottom area of the water pump

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Replace your water pump seal and shaft

Posted on Aug 04, 2010


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1 Answer

2005 Town and Country Minivan Leaking Antifreeze?

Most likely the water pump bearing seal is gone.Will not leak much at all when engine is running since the fluid is moving through the system, but when sitting overnight a definite puddle etc., can be found under the car on in the crankshaft/pulley cover area.

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Your water pump has a weep hole that indicated it is starting to go bad. Look at the lower part of the water pump while engine is running just below and behind where is says (THREADED SHAFT) when engine is fully warmed up if water pump is going out there should be antifreeze in this area leaking down onto the crankshaft pulley. In RED is where to look for antifreeze.

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Hi, Jclloyd75 and the usual suspects are:
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YAMAHA YZ250F Owner Service Manual
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1 Answer

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Check the seap hole at the bottom of the water pump for a leak. If that's where the leak is coming from the water pump will need to be replaced. Otherwise check all hoses and fittings for a leak.

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1 Answer

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