01 RM125 Crank and Water Seal (pics)

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#1
Hey guys I just drained my coolant and it was grey and milky and I notice my coolant has dropped some. Possibly a bad water pump seal. But looking at it seems fine, how will i know if its bad or not?


And I also been having spooge issues with correct jetting and fuel mixture so I might be gettin tranny oil sucked into my top end. Possible a bad crank seal. Do i have to take off the bearing to get to the seal? And do i have to split the case? :think: Any help ASAP would be appreciated.
 
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IndyMX

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#4
you just need to take the side cover off to get to the water pump seal.

And in that pic, that's not the crank shaft. that's the input shaft of the trans. The crank shaft is a bit forward of that, directly under the piston..

Get a service manual.
 
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#5
sorry wrong pic, here is the crank seal






The seal looks fine, its hard to tell if its leaking...when i pop it off will there be any signs of leakage?
 

IndyMX

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#6
I wouldn't remove the seal to diagnose a spooge issue..

There are so many other factors that will play a part in your engine producing spooge..

Did you do a leak down test ? Are you losing a noticeable amount of oil from your trans? How does the cylinder look? Are there other signs in the crank case of oil leaking past the crank seal?

Are you using crap gas? Are you using crap 2 stroke oil?

Are you sure the jetting is perfect? How?

All of those can contribute to spooge. I'd consider the crank seal the very last option.
 
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#7
Yes this is my last option. I had another thread on my spooge issues. Ive tried it all. The bike pulls strong but it just spooges out where the pipe meets the silencer. I hope i can figure this out its a pain in the ass. :bang:
 
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#8
All my 250's spooged at this connector. A little simple green when pressure washing it is all it requires. I love spooge, it's a 2 smoker's signature.
 
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#9
I have to eliminate this issue because when its at full throttle it bogs also. Which can be due to rich mixture of the tranny oil sucked in. Spooge all over your swingarm is really not neccessary, I hate it.
 
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#11
IndyYZ85 said:
Sounds to me like your main jet is rich.
Ditto. When seal is bad you should notice a drop in transmission fluid and it often causes fouled plugs and other issues. Not saying you don't have problems with seal, just that it sounds like too rich main.
 
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#12
Check out what i just found in my gears..








Its a grey plastic piece but i dont know where the hell it came from. Anyone know if its a foreign object or something from the engine?
 

IndyMX

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#13
It's so blurry, no one can possibly make out what it is from those pictures.

TIP: If you have to describe it as "a grey plastic piece", cause you can't even make out what it is in your pics, you might as well not post the pics.

Looks to me like you need to take some things apart and find out if there's something broken in that thing.

I wouldn't ride that bike until I was 100% certain I knew where that piece came from, and that it was either fixed, or you had ruled out that it came from inside the engine somewhere.
 
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#14
The only thing that big is the water pump impeller,I do not believe that is possible to get in there though. Foreign object for ten Gary! O,and how come the seemingly earlier pics have the kickstarter removed and the latter back in???