Wierd water noise ?

[ff_jeff]

dude.. Check your coolant level... and check your oil for coolant. When you check it it should read higher than normal. My wifes 4.3 did this. Its the intake manifold gasket. Or the head gasket. Ill put money on it being either the intake manifold gasket or similar. Also check to see if water comes out of the exhaust. It will only get worse. until you float the bearings.
sorry bout this.

[Ramsey]

ya id say not a good thing ,but also check yure heater core out ,it could be bad or leaking somewere you cant see