Let it settle. You maybe fooled about the bubbles if your are checking it while the fluid is hot. At rest with the engine cooled down, there wouldn't be any bubbles. Check the coolant level when engine is cooled off and not running.
You most likely have a blown headgasket.
Remove the radiator cap on a cold engine. Turn the heater to hot. Make sure the radiator is full. Start the engine and watch for air bubbles escaping from the radiator. Add coolant to keep it full. When you see no more air bubbles all air has been removed.
If there are no schrader valves to bleed the system, remove the radiator cap, make sure the radiator is full of coolant, turn the heater controls to HOT, start the engine, watch for air bubbles escaping, keep the radiator full, and when you see no more air bubbles escaping, replace the cap. The system is now bled.
Don't! Most cars have a reservoir for radiator coolant ... add liquid to the reservoir. Opening the radiator cap introduces air into the sealed system ... you don't want air bubbles in the cooling system.
Make sure engine is cold then do the following: - Open radiator cap - Start engine - Once the thermostat opens , air bubbles should come out of the radiator neck - Wait until air bubbles stops coming out of the neck - Once the Air bubbles stops from coming out , fill radiator as neccessary - Replace cap and test drive - Repeat as neccessary - Process can take long more than 10 minutes or more depending on how much air is trapped in the system.
To remove the air bubbles, open the stopcock and the air bubbles will remove
It sounds like your cooling system is pressurised. Check for a blown head gasket by removing the radiator cap while engine is warm and running. Look for air bubbles. If there is air bubbles, overhaul the top end of the engine.
Overheating can cause this. Air bubbles escaping from the radiator is caused by a blown head gasket.
look for bleed plug on thermostat housing or run car with radiator cap off in park with hosepipe in radiator till bubbles are gone.
If there are no Schroeder valve to bleed the system with then do this. Jack the front of the vehicle as high as possible. Remove the radiator cap, (Cold engine), start the engine and allow it to run until all air bubbles have stopped escaping from the radiator. Keep the system topped off with coolant.If there are no Schroeder valve to bleed the system with then do this. Jack the front of the vehicle as high as possible. Remove the radiator cap, (Cold engine), start the engine and allow it to run until all air bubbles have stopped escaping from the radiator. Keep the system topped off with coolant.
First look on the engine cooling system for bleeder valves. Use them to bleed the air our. If if has none then remove the radiator cap and fill it to the very top with a 50/50 mix of antifreeze and distilled water. Turn the heater control to full hot and start the engine with the radiator cap off. Watch for escaping air bubbles and keep the radiator full at all times. Once you see no more air bubbles the air is purged.
Headgasket or head failure.