Radiator Boiling Up

[ducki]

i just replaced my radiator 1 year ago.. and now the water in the plastic container connected to the radiator always boils when i drive the car but the temp guage is normal in the middle. one time steam started to come out and water spits out all over the from the plastic container. anyone has any idea whats going on?

[blind_elk]

When the radiator is COLD, remove the cap and make sure you have coolant visible in the top of the radiator.

Then start investigating where it is disappearing to.

[Dose Pipe Sutututu]

how many k's has the motor got?

could be a Blown Head Gasket aka BHG..