A weird problem !! please help me

[mohamedmohsen2000]

What should I do with my radiator coolant to remove this bubbling noise ??
should I flush the coolant completely at a workshop then fill it with new coolant ?
I am still confused, and note that the noise is getting louder and lasts for longer time now as the weather is getting somehow cold. I believe there is a relation between the weather and the sound, so it can't be any synthetic oil, it must be water.

Then you are right about the coolant flowing in the heater core. thanks for description AmyV.

Now, we still need the solution.

Thanks

[bronsin]

Originally Posted by mohamedmohsen2000

What should I do with my radiator coolant to remove this bubbling noise ??
should I flush the coolant completely at a workshop then fill it with new coolant ?
I am still confused, and note that the noise is getting louder and lasts for longer time now as the weather is getting somehow cold. I believe there is a relation between the weather and the sound, so it can't be any synthetic oil, it must be water.

Then you are right about the coolant flowing in the heater core. thanks for description AmyV.

Now, we still need the solution.

Thanks

Ok check your coolant level. Remove the radiator cap WITH THE ENGINE COLD! If the radiator is full up to the neck and the overflow bottle is also full of coolant...the noise isnt a low coolant level causing air to circulate through the system. But if there isnt coolant to the top of the radiator its an easy matter to add it. Put the cap back on and drive the car for half an hour or so. Let the car sit for an hour so it cools down. Dont try to open the raditor cap of a hot engine! When its cool to the touch remove the cap and check the level again. Repeat this until the radiator is full. Fill the overflow bottle too if its not reading full.
Good luck and tell us what happens!