Coolant leaking from water pump?!?!

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Hotboy
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Coolant leaking from water pump?!?!

Post by Hotboy »

Whats up brothers I really dig the site!!! I have a problem I have a 85 FZ 750 with 20,000 miles that i bought for $500 I put about 2K miles on it and then it happened. On the left side of the bike it is leaking coolant from the either the water pump gasket or behind the pump, so I have a shop manual and removed the sprocket cover, removed the water pump cover and there is a round rubber gasket that fits into two grooves like the float bowl gasket. It looks good i guess?!?!? I hope and pray that the problem isnt behind the water pump assembly because my manual states there is a seal that has to be pressed in place with special tools. ANYBODY had this problem before?? Dont want to spend money on something that isnt broken. what do yall think banghead
bweight
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Re: Coolant leaking from water pump?!?!

Post by bweight »

All water pump assemblies are pretty much the same, no matter what type of vehicle.. There's a "pressure relief" vent on the pumps in case the pump seizes up.. This allows the coolant to push out of the housing instead of blowing lines (I'm pretty sure I have that worded correctly).. If you take the water pump off, pull the inner half out of the crankcase as well.. There's an o-ring in there and you'll see a shaft with a notch in the end. Check to make sure that the inner o-ring is ok, and try turning the pump blades by hand. You should be able to, but if you can't, then chances are you're water pump has seized and you'll need a new one..

Someone correct me if I'm wrong with this...
89 FZR 400
Custom Paintjob
600 plastics.
06 - R6 Shock
FZR600 Motor
Polished Frame & Engine Covers

Soon to be:
Broke........

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Huckleberry
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Re: Coolant leaking from water pump?!?!

Post by Huckleberry »

YUP its called a weep hole
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the_finch
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Re: Coolant leaking from water pump?!?!

Post by the_finch »

I hate to say it, but if you look carefully, he said it's a 1985 FZ750, the forerunner to our FZR's, so the water pump design may indeed be different than ours.

One thing that would help are some pictures; we always love pictures around here, and it may help us to envision what you're talking about a little better.
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1997 FZR600RJ

Engine: K&N Drop-in air filter - stock airbox - FP 5°ignition advancer - EBC "Street Racer" Kevlar clutch
Exhaust: Stock header - Yoshimura RS-3 Carbon fiber slip-on
Body: Original paint/graphics - Clear Alternatives integrated LED Taillight - Flanders' flush front signals - YZF600 Mirrors - Comp. Werkes Stainless fender eliminator/tag bracket - 60w/55w H4 headlights
Tires: Metzler MEZ4B 120/70 ZR17 Front - Michelin Madacam 100x 150/70 ZR18 Rear
Brakes:Stock rotors with EBC HH Sinstered pads
In the works: YZF600 header, '97 Bandit 600 rear wheel, DynoJet Stage 3, Racetech Springs and Emulators fork rebuild, FZ1 rear shock, YZF600 front MC, Galfer SS Lines, CFM rearsets
bweight
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Re: Coolant leaking from water pump?!?!

Post by bweight »

should still be relatively the same though.. might be a little off, but the concept's gonna be the same.
89 FZR 400
Custom Paintjob
600 plastics.
06 - R6 Shock
FZR600 Motor
Polished Frame & Engine Covers

Soon to be:
Broke........

Image
FZROnline.com Decals. Get yours Now!!!
Hotboy
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Joined: Sun Jul 05, 2009 3:24 pm

Re: Coolant leaking from water pump?!?!

Post by Hotboy »

:cheers: THANK YOU fellas for your input I am makin this quick post and going to snap some pics. THANX AGAIN i dont know where else to ask, I have been studying my repair manual like the Bible and come to the conclusion that its either the pump gasket or the seal. :cheers:
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