According to XULFIQAR`s instructions , i remove the bleeding bolt , remove the radiator cap and start the engine the radiator throws all the water from the bleeding bolt then i pour more water into the radiator and radiator also throws the water out from the bleeding bolt , now i off the engine but the bleeding bolt back and add some water in the radiator and start the engine with heater on , pour more water into the radiator to make it full leave the engine start for 5 minutes and then off the engine and put the radiator cap back and take the test drive with AC on
After the test drive i again remove the radiator cap and start the engine now the bubbles comes after every 5 to 6 seconds but very small bubbles comes sometime one or sometimes 2 to 3 bubbles comes, before doing the above procedure the bubbles comes out very fastly and steadily and i also realize one think that when i press the upper hose pipe of the radiator the bubbles comes in radiator with engine on or off in both situations the bubbles comes but very small bubbles comes in very few quantity so now please i need some help from you please tell me how i remove this small bubbles and may be the air is trapped into the upper hose pipe of the radiator ?