I have a 4bt in a late 90's Case 1840 skid steer. I have water coming out a hose on the back side of the motor. I have circled in green the part where the hose ties into behind the lift pump. I was adding water to the radiator and noticed a full stream coming out the bottom of the hose (has red arrow). First I thought it might be a rear freeze plug but then saw the full flow coming out of the hose. Is the part in green circle and hose a crankcase vent? Getting ready to pull the head to see if I can see a problem. I just think that a bad head gasket wouldn't cause a full flow out this hose. I think I saw some where that there are freeze plugs behind the big rectangular cover on the side of the block. To get to these freeze plugs, does the injector pump have to come off? Any idea or info is really appreciated. Thanks, Joe.