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Discussion Starter · #1 ·
My rhino 660 started blowing bubbles in the coolant. I installed a extra fan that stopped the overheating temporarily. There is now oil in my coolant so i suspect a blown head gasket.
 

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Oil in the coolant can be caused by oil leaking across the water pump seals when the weep hole is plugged..............
 

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Discussion Starter · #4 ·
Thanks, where is the weep hole and could that also be the cause of the bubbles in the coolant reservoir.
 

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Water pump seal can definitely mix oil and coolant but won't cause the bubbles you're seeing. You definitely have a head gasket leaking.
 

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I agree with the headgasket being the issue. The bubbles you are seeing are the result of combustion pressure being released into the coolant tank.
 
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