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coolant in oil..

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2.7K views 4 replies 4 participants last post by  650  
M
#1 ·
iv got a 96 cbr 600 f3 and iv got massive amounts of coolant in my oil.... when i drain the oil its like water and also has the green tint from the anifreeze..

the bike runs great and makes plenty of power other then that..

all signs to me point towards a head gasket .. but there is also the oil cooler and the water pump that could allow the 2 fluids to mix....

but most of what iv read online when its the oil cooler o rings or the water pump seals that the coolant is what gets oil in it...

my coolant has no oil whatso ever in it.. its only the oil that has coolant in it.


sooooo my question is .. is it the head gasket>? or is it possible that its the water pump or the oil cooler?

i pulled the whole bike apart before this issue but the only thing on the motor i removed is the waterpump.. before that i ran it a few times and drained the oil out of it that time and the oil was still fresh and had no coolant in it...so possibly its just the water pump seal?
 
M
#2 ·
also lets say that if someone .... not me.. really wasnt me :0.... sealed the weep hole up on the waterpump so that it would stop leaking...

well i got to thinking when i had the waterpump off it had alot of what looked like jb weld or something all around the back of it . i didnt think much of it at the time but im now thinking that the weep hole could have been sealed.. and if the mechanical seals in the pump went bad and the weep hole was sealed.. wouldnt the coolent then be able to leak threw and into the oil pan?
 
#3 ·
Yep, the coolant can enter through the pump seal. You can pressure test the system and that might help pin point the source of the leak. It may have multiple problems but the pump would be the first place I checked.
 
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