Feedback Score: 7 reviews
Join Date: Apr 2008
Location: Live in Eugene, OR; Work in Junction City, OR; Ride the dunes near Florence, OR
Re: antifreeze is blowing out overflow
That sounds like a leak in the head gasket.
Mine did that a couple times, but only when it got really hot. It turns out that my dealer did not torque down the head bolts tight enough.
So the pressure from the cylinder gets passed the head gasket and pressurizes the coolant system, pushing coolant out the overflow bottle.
When you take off the head you should find some white marks on the black head gasket that will tell you where it was leaking.