How to change coolant on your car ? Please help me?

Question

About 20 days ago i changed a radiator on my car. Now i realize that i did not put coolant on my car properlly because the coolant keeps vanishing and i keep adding more and more of coolant. I have also been told that i might have air pocket in in the system. So now i am trying to put there tottaly new coolant. My question is, Are there any special methods of doing that. As far as i know , you have to turn your heater on while you put in the coolant and which i did not do.
Please explain how it shoud be done.
Thanks in advance.

Answer 1

If your losing coolant you have a leak, or a bad headgasket. Changing the coolant can be tricky depending on what type of car you have. Basically take the radiator cap off, then open the drain valve on the radiator and let the coolant drain into a pan, and yes turn the heater control valve to heat. A more through change is to install a flush tee and flush the system with a garden hose.

When filling the system make sure; first you buy straight antifreeze and mix it 50/50 with water depending on where you live and how cold it gets. Don't buy premixed antifreeze unless your rich and stupid, your buying half water. Some cars, most now days have a bleeder screw you have to open when filling it to make sure it pushes air pockets out while filling. Once full with antifreeze run the car until completely warmed up with the radiator cap off and top off as needed, then put the cap on.

Answer 2

Well the good thing is you don't need to drain your coolant. If it keeps disappearing then you have a leak. All you need to do is find the like and fix. That can be hard part as some leaks on leak when the engine is hot so the water evaporates before you can find it. When the engine is hot and running look everywhere and i mean everywhere. Look at the lines and the ends of the lines look at your water pump. Odds are if you just the put the radiator in then one of the lines didnt get put on tight enough. But draining the coolant and putting more in isnt going to stop the leak. As far as the air pocket, it should have bled it self out with in an hour of driving. Turning the heater on only works for older cars and trucks. On the newer cars the water is free flowing through the heater core.

Answer 3

without knowing the make of car it's shot in the dark. Some systems are hard to bleed . The reason for turning the heater on is if it blows hot air chances are all of the air is out of the system. Here's a good way to bleed a stubborn system. If it has an overflow reservoir just fill it to the top, run the motor till it heats up, with the cap on, then shut if off. as it cools off it will suck the coolant into the radiator and displace the air.



You may also still have a leak

Answer 4

should take at least 2 gallons of coolant, first off. second thing run the car to operating temp with the radiator cap off , shut it down, add coolant, turn it on again for a few mins, repeat the process till coolant doesnt go to halfway in your radiator nymore. take a flash light and simply shine the light into the radiator when the level goes back down you will be able to clearly see with light. dont fill it to the tip top as antifreeze expands when hot.fill it to where the coolant just barely come to the top of the radiator leave a couple inches or so from the cap. then put water to the fill when hot line in the reservoir . I absolutely hate not being right beside vehicles when they have had mechanical issues. but I try to be a good teacher when possible.

Answer 5

You need to get your hands on a special funnel kit that allows the coolant to overflow out of the radiator without losing it, and it also allows air in the system to bubble out of it. You just have to keep the engine running and steadily adding coolant until you don't see anymore bubbles. This could take anywhere from 5 to 30 minutes depending on how much air is in the system.