I've read a bunch of threads and see people saying to keep the valve open when burping, etc. etc... that's just not the way it works and if you leave the flange in the upright position while the car is cooling down, the valve will never close and you'll introduce air into the system. If you have an existing coolant system that works, but you want to ensure no air in system / top off fluid, can someone just confirm that I have this correct: With car sitting overnight / dead cold with car off: - unscrew cap and add coolant (if needed - if coolant level fine, skip this step) - manually raise bleeder valve by flipping flange up (this will raise the plastic stem and open the valve) - turn car on, drive normally to operating temp with cabin temp on high and fan on low - when parked, leave car on and walk to back of the car / manually close the bleeder valve flange (the valve will remain in upright position because the car is hot / pressure in system, but will eventually go down), then turn car off... Then I basically just rinse and repeat this exact procedure each morning until coolant is topped off. This is correct, no?
Exp tank bleeder valve should only be opened manually when cold
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YOUR RESEARCHExp tank bleeder valve should only be opened manually when cold
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Wow...that is quite a procedure. When I have drained and refilled coolant, I just pop the bale up and leave it up for several heating/cooling cycles. I've only had to add a little bit more coolant, then it stabilizes.
Quotes source post: 18349784
Yeah that's what I'm saying lol - people are all over the place when it comes to bleeding the system and most of it is wrong... I think. In your situation, the fluid may stabilize but that doesn't mean the system is truly free of air. If you're leaving the bleeder valve in the open position all the time, it's staying open while the car is cooling down and you are introducing air into the system. The correct way to do it is to add coolant when cold, pop the bleeder valve open, drive, then close bleeder valve "handle" when parked so that the valve doesn't stay open while the car is cooling down. Rinse and repeat each morning until coolant is full.
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