Burping an 07' LS2 Vette
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 1,165
Likes: 57
From: Halcottsville NY
Burping an 07' LS2 Vette
I've heard of this, but, have no idea what it is or how to do it. I changed coolants on all my other "older' vehicles and never did this. My Vette is coming up on 5 yrs and I want to change the coolant by myself. Any help would be appreciated.
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
When you drain and refill the coolant, air bubbles can get stuck in the pump or heads leading to overheating during the first few minutes of driving. One method that I have used is manually burping the heads. To do this, fill the reservoir, put the cap back on and flip the overfill tube straight up in the air. Then pull the hose that goes from the coolant crossover tube to the hose that runs parallel to the radiator. Put a small catch under the open hole at the coolant crossover tube. Plug the hose you just removed from the crossover tube with your thumb and blow into the reservoir overflow tube. You will see and feel water being pushed out of the crossover pipe. Keep blowing until you get a solid stream of fluid, doesn't take very long.
If the overflow pipe isn't air tight (it's a ribbed piece of plastic), remove and use a length of hose that fits, 3/8' fuel line fits if I remember correctly.
If the overflow pipe isn't air tight (it's a ribbed piece of plastic), remove and use a length of hose that fits, 3/8' fuel line fits if I remember correctly.
Advanced
Joined: Mar 2012
Posts: 76
Likes: 1
From: Pacific Northwest Washington
This small line is what I disconnect to get the air out of the system.
Also to get more old coolant out of the system you may want to disconnect the following when draining.
Last edited by cartwheel; May 13, 2012 at 03:37 PM.
Advanced
Joined: Mar 2012
Posts: 76
Likes: 1
From: Pacific Northwest Washington
Taken19 your welcome.
Also forgot to add that I've had much better luck with getting more coolant out. And the burping process with the front end going down hill in my driveway than with the front end going up hill.
Also forgot to add that I've had much better luck with getting more coolant out. And the burping process with the front end going down hill in my driveway than with the front end going up hill.
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 1,165
Likes: 57
From: Halcottsville NY
Thank you, gentlemen! I figured burping was a way to get air out, but, just didn't know the procedures. I've never done this before on my Vette, other vehicles, yes. Just not my Vette.
