getting rid of air in rad
Jul 7, 2010 | 09:16 PM
#5
I grab the upper hose and squeeze while pulling it downward, and hold it there as the air will actually "bubble" into the reservoir...you can feel it bubble through the hose actually. I keep repeating this process until the bubbling stops. Usually, after each time that I release the hose, you will see the level in the reservoir drop as the coolant sucks in. I've changed the coolant in my truck numerous times (maintenance, cam swap, e-fan and radiator swap, etc.), and have never had an air pocket.
Jul 7, 2010 | 09:20 PM
#7
Joined: Apr 2004
Posts: 16,820
Likes: 2
From: In a van DOWN BY THE RIVER
I grab the upper hose and squeeze while pulling it downward, and hold it there as the air will actually "bubble" into the reservoir...you can feel it bubble through the hose actually. I keep repeating this process until the bubbling stops. Usually, after each time that I release the hose, you will see the level in the reservoir drop as the coolant sucks in. I've changed the coolant in my truck numerous times (maintenance, cam swap, e-fan and radiator swap, etc.), and have never had an air pocket.
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Jul 9, 2010 | 09:53 PM
#9
- Fill the system through the surge tank opening.
- Pre-mix a 50 to 60 percent solution of DEX-COOL® and clean, drinkable water.
- Slowly add the pre-mixed solution to the surge tank until the level is slightly above the surge tank split line.
- Start the engine.
- Idle the engine for 1 minute.
- Loosely install the surge tank cap. Do not allow the system to build up pressure.
- Cycle the engine from idle to 3000 RPM in 30 second intervals until the engine coolant reaches 99°C (210°F) and the thermostat opens.
- Shut off the engine.
- Refer to step 2 in order to remove the surge tank cap.
- Start the engine.
- Idle the engine for 1 minute. Fill the surge tank to 1/2 inch above the COLD FULL mark on the surge tank.
- Install the radiator surge tank cap.
- Cycle the RPM. Idle the engine to 3000 in 30 second intervals until the engine coolant reaches 99°C (210°F).
- Shut off the engine.
- Top off the coolant, as necessary, to 1/2 inch above FULL COLD mark on the surge tank.
- Rinse away any excess coolant from the engine and the compartment.
- Inspect the concentration of the coolant.