Question about 2004 Yamaha YZ 450 F

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Water is leaking from weep hole in water pump housing i already changed all the seals and the impeller shaft and it is still leaking. plz help

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I had to replace the shaft as well in mine so it would seal, it had worn a groove.

Posted on May 05, 2010

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CHECK THE BEARING BEHIND THE IMPELLER

Posted on May 04, 2010

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1 Answer

Coolant is leaking from weep hole. I replaced both oil seals, gaskets (case and water pump) impeller shaft and bearings. Only thing I didnt replace was the impeller itself.


Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
coolant leak leaking weep hole 05 yz250 Yamaha 2 Stroke
2000 yz 250 coolant leak
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Sep 22, 2013 | 2003 Yamaha YZ 250

1 Answer

Yz 250 water pump leak


Hi mate this will be the oil & water seals the leak from weep hole is basically a warning light to tell you it needs replacing asap, you need to remove impellor, carefull not to lose the spacer washer behind it...then remove the water seal clean the surface it came from and replace with new seal. Now to do this 100% I would always replace the impeller shaft as the shaft wearing is usually what caused the seal to fail and I would also replace the oil seal which is the other side of case that you just changed the water seal (oil seal sits behind the small bearing) I would also consider replacing this bearing but maybe not critical? all up the impellor shaft the 2 seals and bearing last time I bought cost about $160... no special tools required just quite a bit of time required as you should really remove the outer engine case to access the impellor to undo it and to get to the oil seal and bearing, how ever I know guys do just open the water pump cover then rattle gun off the impellor only replace the water seal then install the impellor and cover back on then ride away! this will work and will fix the leak but is definitely the incorrect way to repair this and will be temporary fix but thought you may like to know this alternative as is very handy way to do it if your on a race meeting and just need to get through the last race or two.

hope this help cheers... Moto X Parts online.com

Feb 28, 2013 | 2003 Yamaha YZ 250

1 Answer

Coolant leaking from hole under water pump houseing


Coolant leaking from the "weep" hole indicates that the seals are out on the water pump. That's actually what the hole is for, to monitor the condition of the water pump seals. Pretty simple fix with the factory repair manual. Replace the impeller shaft and bearings along with the seals while your in there. Good luck!

Jun 11, 2011 | KTM JL 125T13 Motorcycles

1 Answer

I have an oil leak from a drain hole in front of engine.what could be the problem?


If the oil plug bolt is leaking you need a new aluminum sealing washer. There are no oil weep holes in the front of the motor. Is it the weep hole under the water pump? You probably have a bad water pump seal or a bad oil seal on the water pump shaft. Buy a new water pump and the K&L water pump gasket kit. The K&L gasket kit comes with all the gaskets, seals, and washers necessary to do the water pump replacement for a fraction of the cost of the OEM Honda individual gaskets, seals, and washers.

Jan 30, 2011 | 1985 Honda GL 1200 Aspencade Gold Wing

1 Answer

I HAVE A 2006 KXF 450 IT IS LEAKING COOLANT FROM THE WEEP HOLE AND RUNS HOT ALSO IT LEAKED INTO THE MOTOR OIL IS THE PUMP GONE OR JUST A SEAL


hi, the seal in the water pump has failed, carefull removal and examination of the impeller shaft, seals and bearing will determing the pump condition, only then will you know if it is cost efective to repaire or replace the pump, you will also have to remove old engine oil, replenish with new, hope this helps you, paul

Dec 28, 2010 | 2006 kawasaki KX 450 F

1 Answer

Slow Leak in Water Pump-1999 Plymouth Voyager


What's probably happening is the weep hole on the water pump is leaking water. The weep hole is a warning sign that the water pump needs replaced. You don't have any heat because the impeller in the water pump is no longer circulating water.

Apr 23, 2010 | 1999 Plymouth Voyager

1 Answer

Water from weep hole under water pump housing. its not the housing gasket. i think its a seal behind the impeler is this a comon problem on the o6 is it easy to fix


hi,you are quite correct,it will be the seal behind the impellor,kawasaki and suzuki are famous for it,simply undo the nut holding the impeller on,remove the impeller,you will have to pry the seal out,when replacing the seal use a "loctite type"sealing compound to reseat the seal,hope thjis helps...cheers

Apr 03, 2010 | 2006 kawasaki KX 450 F

1 Answer

04 yfz 450 water pump leaking from weep hole


you get the impeller of from removing the complete side case ( not only the water pump cover) then you can remove the water by unlock the internal water pump shaft....replace OIL SEAL
93109-11073-00 and also OIL SEAL,SD-TYPE
93102-12321-00 just to have you're mind in piece..they are so unexpensive that you d'ont wanna take any chance for 4.00 usd.....cfb12e5.gif

Oct 02, 2009 | 2004 Yamaha YZ 450 F

1 Answer

2000 yz125 - Water pump seal change


The two seals in the diagram below are separated by the casing they fit into. The impeller is threaded to screw onto the impeller shaft. I think you already knew that by your "holding the tire" note. The center casing does not get split. The right casing does remove then a wrench is used on the shaft as the impeller unscrews counter clockwise. It is risky to "Lock the wheel" because the gear on the impeller is very thin and can break.

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Jul 01, 2009 | 2003 Yamaha YZ 125

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