How to bleed coolant system on a 6.4 L Scat Pack , by DrehookTV on YouTube. 3 min 20 s.
- Video length
- 3 min 20 s
- Time to do it
- 30 minutes
- Difficulty
- Medium
- Steps
- 9
What you need
Steps
Park on level ground and let the engine cool completely. Never open the radiator cap or bleed screw on a hot engine, since scalding coolant can spray out.
Place a spill tray under the front of the car and lay rags around the radiator and bleed points to catch drips.
Open the radiator or surge tank cap and the bleed screw at the highest point of the cooling system.
Set the funnel in the filler neck and pour coolant in slowly until it reaches the full mark.
Keep the funnel partly filled and watch the bleed screw. When a steady stream of coolant with no bubbles comes out, close the screw.
Start the engine and let it idle with the heater set to full hot. Top up the funnel as the level drops while air works its way out.
Rev the engine gently a few times and watch for bubbles at the bleed screw. Open it briefly to release any trapped air, then close it.
Let the engine cool, then check the level again and top up to the full mark. Fit the cap tightly.
Take a short drive with the heater on, let the car cool, and recheck the level and bleed screw once more.
Tips and common mistakes
Use only the coolant type listed in your owner's manual and mix it as directed.
Air often hides in the heater core, so keep the heater on full hot while bleeding.
A rising temperature gauge or a cold heater after bleeding usually means air is still trapped.
Dispose of old coolant at a recycling centre, since it is toxic to pets and wildlife.
Questions
How do I know all the air is out?
You get a steady bubble-free stream from the bleed screw and the heater blows hot. The level should also stay stable after a cool-down.
Can I bleed the system with the engine hot?
No. Pressurised hot coolant can spray out and burn you. Always wait until the engine is fully cool before opening the cap or bleed screw.
How much coolant will I need?
It depends on how much you drained. Have at least a gallon of correctly mixed coolant on hand and keep topping up until the level holds.
This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.
