why does my water pump keep going bad?

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Old Mar 11, 2007 | 08:36 PM
  #1  
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why does my water pump keep going bad?

02 crf450r...setup for dirt but making the conversion to supermoto if my bike doesn't blow up on me first. so i replaced the seals, water pump impeller, coolant, etc. no leaks in rad., lines are good but i fix it and then a couple hours later coolant is coming out the weep hole and i need a new setup. what the hell is going on and how do i fix it? any help is appreciated because i'd like to get this thing rolling asphalt for summer.
thanks
mack
Old Mar 11, 2007 | 08:44 PM
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Re: why does my water pump keep going bad?

take it back apart and see what you did wrong
Old Mar 11, 2007 | 08:59 PM
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Re: why does my water pump keep going bad?

it was done by a shop the first time, me the second, didn't work either time for more than a few hours
Old Mar 11, 2007 | 11:03 PM
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Re: why does my water pump keep going bad?

sell it and buy a new one
Old Mar 12, 2007 | 08:55 AM
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Re: why does my water pump keep going bad?

don't have the cash to buy a new one, i might sell though
i was looking at the water pump mod from honda with the hole in the impeller to equalize pressure...what is the risk that this will throw things out of balance and mess up my engine?

Last edited by mack36148; Mar 12, 2007 at 09:04 AM.
Old Mar 15, 2007 | 11:10 PM
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Re: why does my water pump keep going bad?

If you replaced the seal correctly and its still acting up you have the following 1 or 2 problems. Your pump shaft bearings are going bad and letting the shaft wobble or your shaft may have a groove from where the existing seals were contacting it..........
Old Mar 17, 2007 | 04:33 PM
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Re: why does my water pump keep going bad?

u have to replace the counterbalancer and bearings too. also, honda put the oil check hole in the wrong place on those so u have to add more oil.
Old Mar 21, 2007 | 11:28 PM
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Re: why does my water pump keep going bad?

counter balancer??? why would you have to mess with that???
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