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Coolant Bubbling

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Old Oct 6, 2021 | 02:09 PM
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Coolant Bubbling

I just got a 13 f250 6.7 and have been going through everything to make sure everything is in good working order. I have noticed when I run my truck and shut it off I can hear and feel bubbling in the top coolant hose. I don't see anything in the recovery tank but it lasts for a few minutes and it's done. It's not running hot and I'm not having to add coolant. Is this normal for a 6.7? I had a 5.9 cummins before this and this motor is way more complicated than that one. Thanks in advance.
 
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Old Oct 7, 2021 | 09:18 AM
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Originally Posted by Fordgtr06
I just got a 13 f250 6.7 and have been going through everything to make sure everything is in good working order. I have noticed when I run my truck and shut it off I can hear and feel bubbling in the top coolant hose. I don't see anything in the recovery tank but it lasts for a few minutes and it's done. It's not running hot and I'm not having to add coolant. Is this normal for a 6.7? I had a 5.9 cummins before this and this motor is way more complicated than that one. Thanks in advance.
I think you mean you don't see bubbling, but just asking, you do see the AF is between the min/max lines on the tank? If not it is low.
 
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Old Oct 7, 2021 | 01:15 PM
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Originally Posted by djousma
I think you mean you don't see bubbling, but just asking, you do see the AF is between the min/max lines on the tank? If not it is low.
correct I don't see bubbling. The fluid is actually probably over filled. The tank is about 3/4 full at operating temperature. The only fill lines I see are the cold fill lines that give you a small range. I'll probably drain some out.
 
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Old Oct 8, 2021 | 05:15 AM
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check it after a cold soak for the proper level in the degas bottle.
Replace the degas cap.
 
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Old Oct 10, 2021 | 09:56 AM
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Agree with cap recommendation

i would also by a coolant hydrometer and measure the water/coolant mix ratio. .

check the degas tank for evidence of fuel or oil.

 
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Old Oct 11, 2021 | 09:19 PM
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Originally Posted by speakerfritz
Agree with cap recommendation

i would also by a coolant hydrometer and measure the water/coolant mix ratio. .

check the degas tank for evidence of fuel or oil.
it appears to be 100% coolant and no water. I'll probably drain some out and mix with distilled water.
 
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Old Oct 16, 2021 | 11:36 AM
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Originally Posted by Fordgtr06
it appears to be 100% coolant and no water. I'll probably drain some out and mix with distilled water.

i was expecting to report back with the reverse.

 
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