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z400 leaking coolant near engine

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  #1  
Old 06-23-2009, 08:51 PM
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Default z400 leaking coolant near engine

So i realized my z has been leaking coolant lately but didnt know from where until recently. She has been sitting in a shipping container the last 6 months where the temperatures get extreme so im hoping its the gasket. When you follow the coolant line back to the bottom of the engine it meets a metal part where the clamp holds the coolant line from leaking. Its dripping pretty constant after ripping the bike down my street 1/4 of a mile and its directly from the bottom of this "assembly"
To give you guys a better idea look a little bit under the oil filter and to the left to get an idea of what im talking about. This is a dirtbike and not an ATV but same engine. I dont believe its a head gasket due to it leaking at the bottom of the engine, what do you guys think it could be?
http://www.suzukimotorcycles.com.au/...20Unedited.jpg

I cant get the pic to upload but here is the link.
 
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Old 06-24-2009, 12:08 AM
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is it here? its most likely either the hose is worn and not sealing anymore, when they get worn they get little tears or they get stretched...or its the water pump housing o ring, they dont really use a gasket but theres an o-ring that fits around the housing, it might have got warped from to much heat or something.

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Old 06-24-2009, 07:02 AM
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Thanks, I believe it would be the o-ring because the coolant hose isnt leaking in any way. Hopefully they have the o-ring in stock and I can get the bike running again tonight.
 
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Old 06-24-2009, 07:02 AM
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Thanks, I believe it would be the o-ring because the coolant hose isnt leaking in any way. Hopefully they have the o-ring in stock and I can get the bike running again tonight.
 
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Old 06-25-2009, 08:11 PM
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more likely the water pump seal
 
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Old 06-25-2009, 08:43 PM
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Originally Posted by cataway
more likely the water pump seal
yea the one that that fits around the impeller maybe? idno, have to take it apart and see, is it leaking from the bottom water pump cover bolt? might just need to tighten a bolt, hard to say...either a bolt got loose, bad o-ring or maybe that seal inside the pump thats a good point.
 
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Old 06-26-2009, 07:04 AM
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well i got a new water pump o-ring and im pretty sure its still leaking, I couldnt beat on it that much at my house and im not sure if the coolant on the skid plate was from the when i drained the coolant last night. However the leaking significantly slowed down

I will order a new water pump seal in the next few days along with some other goodies and hopefully that will be the fix to my problem.
 
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Old 06-27-2009, 07:05 AM
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the only hard part about the seal is getting the old one out, i found that if ya bend the lip up all the way around it it will pop right out.
 
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Old 04-21-2010, 09:31 AM
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so after replacing the o-ring 2x and going over the bolts a few times its still leaking. Im pretty sure its the water pump seal. Where is that located at?
 
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