weird noise

[rollenkdx200]

i have a 1992 kdx200 and a couple of rides ago while sitting in waiting for my bike to worm up my bike made a weird winding noise and the bike kinda shook. Than on thanks giving it did it again and some guy said that it was my water pump going out. now it is getting to a point where it is happening every time i stop. The bike is not overheating. Is there a way i can check the water pump. or what else would cause this.

 

[ctdyno]

im thinking water pump bearing, mean i work mostly on cars but thats what it sounds like on a car when the seal goes out and water goes into the bearing, it wouldnt stop pumping but it could mess up very badly, check it out

 

[actual mechanic]

Ok - so I'm concerned about the thanksgiving thing - did you have a turkey strapped to the back of the bike - that would explain the shaking. Or maybe an earthquake? Check it again at Christmas, see if the same thing happens - then we'll know it's a fowling problem...

Seriously, it's probably mainbearings - expensive. But then , I'm a bike mechanic for a living...so whaddoIknow!

 

[rmc_olderthandirt]

When a water pump starts making noise it is because the bearing is failing.

When the bearing starts to fail the shaft wobbles a lot.

When the shaft wobbles a lot the seal fails and the pump starts leaking water. On a car, this usually leaks out onto the ground, but on a bike it could leak into the transmission/engine case.

When the seal starts leaking the bearing gets wet, which doesn't improve its operation at all.

At this point it becomes a race to see if you run out of water and overheat first or if the bearing totally fails and something breaks in an expensive manner. If you are replacing water in the radiator a lot then you are hedging the bet some, and not in a good way.

If it was me, I would buy a new water pump and fix it before any of that happened. If it still makes the noise after you replace the pump, well, then that wasn't it, but at least you will have eliminated one easy to fix possibility.

Rod

 

[ctdyno]

yup, rods right about that, fix the most likely then if its still there keep looking, u dont want things to fly apart in there, bad situation