how do I bleed coolant antifreeze 2005 C6
06-26-2009, 09:41 AM
#1
Racer
Thread Starter
how do I bleed coolant antifreeze 2005 C6
just curious as what is easist way to bleed my coolant system ,my temps seem a little high and want to eliminate any air that may be in system this is a 2005 C6
06-26-2009, 11:16 AM
#3
Racer
06-26-2009, 11:21 AM
#4
Team Owner
There are a couple of ways to do it. Have you done a search on the forum? The easiest way is to remove the small hose going to the metal tube which goes to the heads. Then force air into the coolant tank(with your mouth - be careful here) and coolant should come out freely through the small hose you disconnected. Remember to do this only on a cold engine. Good luck.
06-26-2009, 11:33 AM
#5
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From Motorhead-47:
Simple technique to purge air from the cooling system. …There are two hoses on the overflow tank. Follow the smaller/upper one until you reach it’s junction point. Remove that connection. Fill the overflow tank and put the cap on tight. Blow into the overflow tank via the line that your removed. This will force coolant from the overflow tank into the cooling system. When the tank is empty, refill and repeat. Continue doing this until fluid begins to exit from the other end of that hose connection you removed. Reinstall hose. DONE! Works like a charm!
I didn't know about this either but having done it, it works.
Simple technique to purge air from the cooling system. …There are two hoses on the overflow tank. Follow the smaller/upper one until you reach it’s junction point. Remove that connection. Fill the overflow tank and put the cap on tight. Blow into the overflow tank via the line that your removed. This will force coolant from the overflow tank into the cooling system. When the tank is empty, refill and repeat. Continue doing this until fluid begins to exit from the other end of that hose connection you removed. Reinstall hose. DONE! Works like a charm!
I didn't know about this either but having done it, it works.
Last edited by Tally Ho; 06-26-2009 at 02:44 PM.
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C6Dyno (05-14-2022)
06-26-2009, 01:05 PM
#6
The shop that installed my low temp thermostat stated that it did not have to be purged and would take care of itself through the overflow reservoir. They told me to add water to the overflow if less that 1/2 inch below the top at the lowest point after driving and letting cool. I have had no problems.
06-26-2009, 03:45 PM
#7
Well, don't our Corvettes actually have a 'surge tank', not an overflow tank, just like my Cadillac Northstar?
With the surge tank, the whole thing is pressurized. With an overflow tank, the pressure ends at the radiator cap and the little hose going to the overflow tank is not pressurized.
So, with the surge tank, and a 'radiator cap' on the surge tank, there is no need to 'bleed' the system, the entire thing, including the surge tank is under pressure and should be moving the fluid around.
Now if the small hose going to the surge tank gets plugged, you have a problem. But if you are not putting stop-leak in it, have kept the level up to the correct level, etc, etc, this should not happen.
With the surge tank, the whole thing is pressurized. With an overflow tank, the pressure ends at the radiator cap and the little hose going to the overflow tank is not pressurized.
So, with the surge tank, and a 'radiator cap' on the surge tank, there is no need to 'bleed' the system, the entire thing, including the surge tank is under pressure and should be moving the fluid around.
Now if the small hose going to the surge tank gets plugged, you have a problem. But if you are not putting stop-leak in it, have kept the level up to the correct level, etc, etc, this should not happen.
06-27-2009, 04:53 AM
#10
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St. Jude Donor '11-'12-'13, '15, '16-'17-'18-'19
I never thought you had to bleed the coolant in the radiator.
I am prettty sure it takes care of itself when the thermostat opens at operating temp, the reservoir is set higher than the radiator, so naturally any air in the system will be burped up into the reservoir. IMHO
I am prettty sure it takes care of itself when the thermostat opens at operating temp, the reservoir is set higher than the radiator, so naturally any air in the system will be burped up into the reservoir. IMHO
06-27-2009, 06:02 AM
#11
Melting Slicks
06-27-2009, 04:12 PM
#12
Team Owner
change it every 3 years or 50,000 miles. vaccumning out the cooling system at the factory assures no air in the system. this works well also if you have a vaccumn system similar to an a/c system. most likely your high temps are normal from the factory thermostat and setup. change to a 160 stat and have the fan kick on lower thru a tune.
Isn't the cooling system in this car the same as other cars out there or is there something special / different that requires special instructions for this cooling system?
06-27-2009, 04:51 PM
#13
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C5 & C6 corvettes are shouldnt need to be bleed, the coolant tank is the highest point of the cooling system and will self bleed. There has been once or twice where the car didnt bleed all the air on its own. i jacked the front of the car up and cracked the coolant cross overs from the heads and that worked pretty good for me.
06-27-2009, 11:51 PM
#15
Team Owner
This cooling system on the C-6 doesn't sound like a regular coolant system as far as the maintenance goes in that all you really need to do is drain and change the anti-freeze.
11-30-2013, 06:17 PM
#17
Le Mans Master
The shop that installed my low temp thermostat stated that it did not have to be purged and would take care of itself through the overflow reservoir. They told me to add water to the overflow if less that 1/2 inch below the top at the lowest point after driving and letting cool. I have had no problems.
11-30-2013, 09:51 PM
#18
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St. Jude Donor '13
We've drained/refilled the radiator on mine three separate times, just followed the refill procedure in the Service Manual and it worked perfectly.
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C6Dyno (05-14-2022)
02-07-2017, 11:55 PM
#20
Well, don't our Corvettes actually have a 'surge tank', not an overflow tank, just like my Cadillac Northstar?
With the surge tank, the whole thing is pressurized. With an overflow tank, the pressure ends at the radiator cap and the little hose going to the overflow tank is not pressurized.
So, with the surge tank, and a 'radiator cap' on the surge tank, there is no need to 'bleed' the system, the entire thing, including the surge tank is under pressure and should be moving the fluid around.
Now if the small hose going to the surge tank gets plugged, you have a problem. But if you are not putting stop-leak in it, have kept the level up to the correct level, etc, etc, this should not happen.
With the surge tank, the whole thing is pressurized. With an overflow tank, the pressure ends at the radiator cap and the little hose going to the overflow tank is not pressurized.
So, with the surge tank, and a 'radiator cap' on the surge tank, there is no need to 'bleed' the system, the entire thing, including the surge tank is under pressure and should be moving the fluid around.
Now if the small hose going to the surge tank gets plugged, you have a problem. But if you are not putting stop-leak in it, have kept the level up to the correct level, etc, etc, this should not happen.