That's not a bolt hole, there is a small hole at the top. Maybe an overpressure relief hole?Given the density of the stain, I'd be willing to wager you've got a tiny spray (perhaps when temps are high), and that wind pushes it back towards the bolt hole, where wind vortices pick it up and spray it inside the hole.
What is that hose at the very front of the most colorful stain? Is that your culprit?
Hi,
For a few weeks nog, every now and then, there is this blue substance that's coming out of my carter.
What is it and can it hurt my bike?
Is this a symptom that something wrong with the bike?
I have no complaints about the bike. he runs smooth.
All help or info is appreciated
Hey Bram, this doesn't look good Same thing going on here, thanks for posting this or I may have never noticed mine. I've been digging through the service manual and there is not a good written functional description, but by looking at the diagrams this is what I see... The oil pump and water pump are a combination unit, two pumps on a common shaft driven by a chain. The water pump and oil pump are separated by a water seal on the fwd side and an oil seal on the aft side. If either of the seals leaks past the shaft there is a shaft drain tube that drains out of the hole in the oil pan, this should prevent coolant from getting into the oil but if the drain tube seals leak we're in trouble If you are still under warranty you should go to the dealer and have them replace the water/oil pump unit.
Hi,
For a few weeks nog, every now and then, there is this blue substance that's coming out of my carter.
What is it and can it hurt my bike?
Is this a symptom that something wrong with the bike?
I have no complaints about the bike. he runs smooth.
All help or info is appreciated
Hey Bram, this doesn't look good Same thing going on here, thanks for posting this or I may have never noticed mine. I've been digging through the service manual and there is not a good written functional description, but by looking at the diagrams this is what I see... The oil pump and water pump are a combination unit, two pumps on a common shaft driven by a chain. The water pump and oil pump are separated by a water seal on the fwd side and an oil seal on the aft side. If either of the seals leaks past the shaft there is a shaft drain tube that drains out of the hole in the oil pan, this should prevent coolant from getting into the oil but if the drain tube seals leak we're in trouble If you are still under warranty you should go to the dealer and have them replace the water/oil pump unit.
The fix would be to remove the oil/water pump and replace the seals.So whats the fix?
So, i went to the dealer totdat And showed him the leakage.
He gave me exact the Same explanation as you did, DanS.
The oil pump And water pump are on THE Same shaft. And the drain hole prevents That coolant is coming in THE oil.
He told me That this is an issue with bikes which are standing still for a few years. Because of the ceramic seal that doesnt get rubbed in while driving.
And the dripping is only happening when the engine is cold and stalled in the garage. When you drive, the heat vaporises the water in the cooland, making it a green coloured substance.
I have checked this and it is correct. My dripping only happens when the engine is cold and parked in my garage.
I looked at brand new bikes in the shop with 0km. And some of them also had the same dripping issue. Fz8, fz1, R1
He ensured me that the dripping can not happen while driving due to the high pressure on the seals. Its a ceramic seal and the higher the engine temp, the better it seals.
My bike stood still for 2years before i bought it with 0km on it.
Thats why i have this issue.
He told me that its not a problem and i am not going to blow a seal while driving.
Thanks for the info Bram, Maybe it's not that big of an issue. I'll keep a close eye on mine and if it gets any worse I'll be tearing it apart and resealing the pump. The thought of antifreeze getting into the oil really bothers me!
I'll be keeping an eye on it too.
I wonder how many members here also have the same issue, and don't even know about it...
I don't think we are the only ones DanS