Coolant and Thermostat write up
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Rock Crawling
Joined: Aug 2009
Posts: 397
Likes: 29
From: C'Ville, VA
Alright one more question, after I drain the radiator, replug the drain plug and put radiator flush flush cleaning solution into it how long should I let it run? I've heard that this should be done before you go on a semi long drive like upwards of 3 hours. What are your thoughts? Thanks guys
Three Wheeling
Joined: Sep 2015
Posts: 60
Likes: 0
With the engine cold and the coolant reservoir full remove the radiator cap.
Remove the fill plug from the top of the radiator making sure that is also full.
Start the engine and turn the heater to full hot both sides and fan speed on "1".
Let the engine idle until nothing but hot coolant comes out of the radiator fill plug.
Replace plug. (leave engine running)
Make sure there is heat coming from the vents, I put the HVAC to the "dash" setting and roll down the drivers window so I can stick my hand in and feel for hot air.
Once no more air bubbles up through the coolant reservoir and the thermostat is open (upper hose will be to hot to touch) replace the radiator cap.
Then shut off the engine.
Drive it for a day and then after it has cooled overnight check the coolant level and top off if needed.
Now keep in mind that it is a closed cooling system, so if the cap is on the radiator then air cannot escape from the system because it has no place to go.
This is how I bleed the system and it works everytime.
Remove the fill plug from the top of the radiator making sure that is also full.
Start the engine and turn the heater to full hot both sides and fan speed on "1".
Let the engine idle until nothing but hot coolant comes out of the radiator fill plug.
Replace plug. (leave engine running)
Make sure there is heat coming from the vents, I put the HVAC to the "dash" setting and roll down the drivers window so I can stick my hand in and feel for hot air.
Once no more air bubbles up through the coolant reservoir and the thermostat is open (upper hose will be to hot to touch) replace the radiator cap.
Then shut off the engine.
Drive it for a day and then after it has cooled overnight check the coolant level and top off if needed.
Now keep in mind that it is a closed cooling system, so if the cap is on the radiator then air cannot escape from the system because it has no place to go.
This is how I bleed the system and it works everytime.
When you say with the reservoir full do you mean up to the fill line or the tank completely full?
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