Bleed cooling system air pockets easily with this air purge kit

Learn how to bleed air from your cooling system using this cooling system bleeder tool kit

Use a vacuum cooling system filler tool to bleed cooling system air pockets. You can drain your cooling system by pulling the lower radiator hose. And, you can drain the block by pulling the block plugs, if your engine even has drain plugs. But regardless of whichever method you choose, you’ll still have to bleed cooling system air pockets. That’s where this UView 550000 Airlift Cooling System Leak Checker and Airlock Purge Tool Kit comes in handy.

Why you have to bleed the cooling system

Having air trapped in your vehicle’s cooling system can lead to a number of serious problems and prevent the system from operating efficiently. Bleeding the air out regularly during maintenance is crucial to keeping things running smoothly. Here’s why it’s so important:

Air acts as an insulator, preventing heat transfer. The whole purpose of a liquid cooling system is to circulate coolant to absorb heat from the engine and dissipate it through the radiator. Air pockets impede this process, acting as barriers that block coolant flow. This allows hot spots to develop and components to overheat, causing accelerated wear and tear.

Air expands when heated, pushing coolant out. As those air pockets are heated up, they will expand rapidly, displacing coolant from the system and reducing total fluid capacity. Hot coolant may ultimately shoot out of the overflow tank or be forced through weaker points in the system, causing leaks.

Pockets of air can cause flow disruptions and cavitation. Alternating high and low pressure zones in the serpentine pathways of the cooling system can cause tiny bubbles to form, collapse, and implode violently. This cavitation process over time can seriously erode metal components like water pump impellers, causing catastrophic failure.

Trapped air reduces total heat capacity. The liquid coolant is able to absorb a lot more heat than pockets of compressed air. Reduced total heat capacity means the system heats up faster, creating strain on components and further expansion of trapped air. It’s a vicious cycle that compounds issues over time.

UView 550000 Airlift kit with valve, tubing and radiator adapters

Use this vacuum evacuator/filler to remove air

UView 550000 Airlift Cooling System Leak Checker and Airlock Purge Tool Kit require compressed air to operate. Mount the adapter in the neck of the radiator. Attach

your compressed air hose and turn it on. The UView 550000 uses compressed air to pull a vacuum on your entire cooling system. Once the gauge reaches the recommended vacuum, you close the valve and install the fill hose.

Then open the valve the cooling system vacuum will pull in the coolant to fill the engine. Repeat the procedure a few times and each time it will pull a vacuum on the system and pull in more coolant. You’ll wind up with a completely full system with no air pockets.

If you’ve already filled the system, use the UView 550000 Airlift Cooling System Leak Checker and Airlock Purge Tool Kit to apply a vacuum and bleed the cooling system. It’ll pull all the air pockets out.

I highly recommend this tool to bleed cooling system. It works great and is much easier than trying to remove air pockets the old way

© 2012 Rick Muscoplat