Monday, October 24, 2011

How to bleed antifreeze to get air out of system and gaskets ?

Please help, I have no money and am doing everythin I can on my own to my 1997 saturn sc2 as I'm working 7 days a week just to support my mother...



1. Someone mentioned to me to take the BOTTOM radiator hoze out and let all the air sip out, run the heater while doing this, and then plug it back in. Is that the RIGHT way to bleed my saturn ? I think I missed a step or something..



2. Can you please tell me how to bleed it AFTER I've changed my thermostat (which im currently doing) so that I can do them both at the same time.



3. When I took the bottom hose off to begin the thermostat exchange, tons of air came out first, how bad is this ? Does that mean the head gaskets probably already cracked, or do people bleed just to stop that exactly ?



I'm still doing it as I check Y! Answers, so please feel free to refer to things as if the hose was disconnected ,because it is.



Thank you very muchHow to bleed antifreeze to get air out of system and gaskets ?Not sure who told you to take the bottom hose off but that is pretty funny.



FIll the system with anti-freeze. Then leave the radiator cap or reservoir tank cap off and run the car until it heats up. Also run the heat. You'll see lots of bubbles coming up through the top as the water pump forces the water out. You may need to add antifreeze as this happens (don't fill the tank to the top though). If you don't open the cap then 1/2 your antifreeze will come out with the air.How to bleed antifreeze to get air out of system and gaskets ?hook everything back up and fill rad and reservoir with coolant/drive around the block and come back and check the reservoir for proper level/just do that a few times and that will bleed it/however it has been my experience that the engines on that model break rather easily when overheatedHow to bleed antifreeze to get air out of system and gaskets ?Open the top of the overflow for the radiator and keep it filled and run the car with the heater on. It should get the air out itself because it uses the overflow.How to bleed antifreeze to get air out of system and gaskets ?Fill the radiator and reservoir with new coolant.

Turn the heater on full HOT.

Start engine and let it idle with the radiator cap off.

Keep the system full.

Once a steady stream of hot coolant comes out of the radiator then replace the cap while the engine is still running.

After this is done for the next couple of days when the engine is cold check the coolant level and top off as needed.

Once you are sure it is full you are good to go.How to bleed antifreeze to get air out of system and gaskets ?Listen to Robert. He's right. You have to leave the radiator cap loose so the air can escape.How to bleed antifreeze to get air out of system and gaskets ?Eng. Coolant system. Water is drawn from bottom of Rad.by Water Pump Pressurized by Rad. cap, raises boiling point most 12 Lb.then water is held by Thermostat to keep Eng 190 degree,when temp is Reached Thermostat opens the door and lets water return to top of Rad,start car and let Idle until water flows ; no air ;then it flows down and Air By fan and or road speed flows thru and cools the Hot Eng. Coolant;

To answer Your Question You have a Good Plan ;When You have finished putting new thermostat in Refill Rad,Then Disconnect top Rad Hose at Rad,when You get water flowing out which should be at Operating temp ;Let car cool ,then Reconnect Hose. You will have no (Air-Locks) with this method;Note use water the first time and when You reconnect upper Hose use I gallon anti-Freeze.