Wednesday, November 24, 2010

When you change coolant, how do you ensure that no air pockets form in the engine?

I see peopel warnings about coolant change fiascos that leave air pockets, I dont see how you can avoid this unless you turn the engine sideways/usidedown, while filling it.



Turning my engine sideways/upsidedown is not feasable by me, so how do i fill the engine with coolant and leave no air pockets?When you change coolant, how do you ensure that no air pockets form in the engine?some systems have a bleeder valve you have to loosen and bleed off the air after the engine has reached operation temperature. some you have to loosen the radiator cap, to let the air out ( be careful not to get burned ) some will bleed them selves off in to the over flow tank as the engine runs.When you change coolant, how do you ensure that no air pockets form in the engine?Personally, I always fill the system to half it's total capacity with 100% of the approved antifreeze first. First turn the heat selector switch to hot and heater motor on high. Start the car and very slowly add distilled water till the radiator is full. With the radiator cap off turn the motor off and let it cool down. When it's stone cold top it off with more distilled water and install the *new closed system radiator cap.



It pays to remove the coolant recovery bottle and scrub it out with a round household brush, Wisk and hot water. Bolt it back on and purposely over-fill it with water or any left- over antifreeze. Just keep an eagle eye on the coolant recovery bottle for the first week you drive your car as the level will drop noticeably as any air in the water jackets will be purged out as the coolant cycles back and fourth.



Always remember that your cooling system is perfectly safe and operating properly as long as the temperature needle is where it should be when the motor is hot. Another trick is to grasp the upper radiator hose with the motor running. If you feel heat after the motor's been on for five minutes the coolant is circulating properly.



If you have a vehicle with a pressure cap directly on the coolant reservoir you really have it knocked. Fill it up drive it and keep an eye on the level for a week. This type of system is less prone to develop inital air pockets as their are additional bleeder hoses leading back from the motor to the tank. Fords and late model GM's operate this way.





Usually this isn't a huge problem if you thoroughly clean the radiator opening and install a new *closed system radiator cap.When you change coolant, how do you ensure that no air pockets form in the engine?anytime you break on the cooling system then air can get into it. just like if you have a hole in the brake line then after you replace it you have to bleed the brakes.When you change coolant, how do you ensure that no air pockets form in the engine?driving a while then check the level they should surface by the water pump moving them aroundWhen you change coolant, how do you ensure that no air pockets form in the engine?if there are any air pockets

they should come out after driving it for a little while