Radiator will only take 3 quarts of coolant after flush?? - Jeep Wrangler Forum
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Old 03-19-2013, 12:31 PM   #1
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Radiator will only take 3 quarts of coolant after flush??

I flushed my radiator and went to refill it, it over flows at 3 quarts, wont take anymore? Any ideas why this is happening?

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Old 03-19-2013, 12:35 PM   #2
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With it running or not? You had it running, right?

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Old 03-19-2013, 01:22 PM   #3
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With it running or not? You had it running, right?

Running with the heat on. I called the dealership, they said an air pocket may be the problem as I suspected, they said it may take 30-40 min for the air pocket to pop. Any other ideas?
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Old 03-19-2013, 01:42 PM   #4
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Park it uphill or drive the front tires on to something so the front is higher. Will help bring the air bubbles to the radiator cap opening. That's what I do.
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Old 03-19-2013, 03:05 PM   #5
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Just tried that, still no luck. Is there a bleeder in the jk?
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Old 03-19-2013, 03:30 PM   #6
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Are you sure the rest of the old coolant is out? Did you measure the amount that came out? Does it seem to overheat when you run it? Did you have issues before replacing the coolant? Did you put a new thermostat in?
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Old 03-19-2013, 03:48 PM   #7
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All of the coolant came out, but very little wants to go back in, I seem to have all the air out. No issues, no over heating. just basic maintenance.
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Old 03-19-2013, 10:39 PM   #8
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How did you drain the system after flushing it?
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Old 03-19-2013, 10:46 PM   #9
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Did you drain and flush the whole system or just radiator?
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Old 03-20-2013, 02:13 AM   #10
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Did you drain and flush the whole system or just radiator?
I drained it from the drain valve at the bottom of the radiator. How else can you drain the radiator/cooling system? Lower hose?
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Old 03-20-2013, 06:37 AM   #11
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Pull the lower hose off the outlet on the engine.
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Old 03-20-2013, 05:19 PM   #12
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Started over, pulled the bottom hose, took 6 quarts, not the 13 the manual states. Very strange. Could 7 quarts possibly stay in the engine?
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Old 03-20-2013, 11:01 PM   #13
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System capacity including the overflow reservoir is 10.5 quarts. The reservoir holds 2 quarts or so, plus what was left in the heater core. 6 quarts doesn't seem far off.

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