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Discussion Starter · #1 ·
Today I was giving the bike a bit of maintanance and decided to replace the spring under the cover where the selector shaft goes into the engine, sometime ago this small tension spring broke and I replaced it with what I had available at the time. Anyway when I removed the cover (shown in the attached picture) there was a creamy paste all over the inside of the cover which immedinately made me suspect water contamination. On closer inspection I noticed a small droplet of water on the indside of the cover itself. I have since drained the sump oil and there was no water contamination in that. I checked the radiator level and it is full including the reservoir. I even removed the magneto cover to see if that had any of the water contamination but it also looked normal. Does anyone have any idea what could cause the oil in this cover to become contaminated with water? I was thinking I might have caught it at the very early stage and hence the small amount of contamination. On a short ride two nights ago my friend commented that when I opened it up down one straight it appeared to have moisture coming from the exhaust as though it were cold.... does this indicate a blown head gasket? if so why would only the oil under this selector shaft cover show contamination? weird... If anyone can offer any help I would be real greatful. Thanks in advance
 

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Discussion Starter · #3 ·
My wifes car has trace amounts of coolant in it, but I'd never know just by looking at it. You could get the oil tested (http://www.oaitesting.com/) see what you get back.

Did you use a nozzle on the hose, when you washed the bike?

Thanks for your reply, I have not actually washed the bike for ages. I just thought it was weird how contamination was so obvious under that cover while the rest of the motor didn't seem to have any water contamination. I agree it is possible the sup oil does have a small quantity and I am just unable to detect it there. I am not really sure what I should do next to be honest..... not good.
 

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My R1 used to eat me!!
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Is your sight glass creamy??????
If so could be your water pump seal leaking
The water pump is integrated with the oil pump so have to get to it from bottom of engine
Like you say you might have caught it early which is why it doesnt look like you have lost any water
 

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I am not completely familiar with the 98 engine or motorcycle engines in general, but I just took out an engine in a 96 F3, and I believe it is the oil cooler portion on the front of the engine where there is a coolant connection within it. If you were to pull the whole cooler off, coolant would mix with the oil. It might be possible that one or both of the o rings that keeps these seperated in there is just going bad. I believe the fix would be pretty easy if this were the case. I'm guessing all you would need to do is drain both the coolant and the oil, unbolt the cooler, clean up any residual coolant and oil in there, and replace the the o rings and re-install it. Then I have heard to put some cheap oil in there and let it circulate and then drain it again to try to flush out any coolant in the oil.
 

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This is on the F3 engine I took apart, but I think it should be somewhat similar in function. I have heard the newer R1s are like this also. I colored the coolant passages green and the oil passages brown for reference. But you can get an idea of how coolant can get in the oil if these seals are leaking.
 

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