Missing a bit of coolant - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 08-05-2019, 03:30 PM Thread Starter
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Missing a bit of coolant

OK, guys, I have a question about coolant, the truck is an 07 with only 88k miles. The truck has a few upgrades blue spring kit, coolant filter, oil bypass system, straight exhaust, and few other things you can see in my sig, btw truck never been tuned. Right now there is a power loss but I'm working on it since its injector related.

The only issue is the degas bottle drinks coolant. When I do an oil change I check the coolant level and I have always had to fill it to the proper level when itís down but not much, never seen a leak. I did notice a bit of residue on the degas cap.

I did clean the EGR valve a few years ago and I believe it was a bit wet but back then I didn't know it was supposed to be dry. Will check that again tomorrow and see how it looks. I attached a picture of the degas cap that was replaced a few years ago and probably has less than 15k miles on it.

FWIW, every time I'm in a flat area I check my deltas, last time I did they were about 10 degrees difference if I remember correctly, but that was summer 2017 ago and I haven't used the truck much this past year.

I'm assuming the issue could be either the EGR or head gasket if its the EGR I believe I should be able to tell by looking at the EGR valve, but what about HG?
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post #2 of 9 Old 08-05-2019, 07:09 PM
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It could also just be a small leak that only shows up under normal pressure caused by thermal expansion (so, when it's warmed up and you're driving it). If you have a bypass filter with valves, take one loose from the filter head and use it to pressure up the cooling system until the cap relieves, then close the valve to leave it under pressure. Get out your flashlight and look everywhere on/around the engine, and lay underneath it. It may take a few moments to show up.

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post #3 of 9 Old 08-05-2019, 11:45 PM
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The minimum line is where the maximum line should be. Looks like where your fluid is now is about perfect. I'd replace the car with an OEM.

Also, rig up an inline psi gauge to the degas bottle to check your coolant pressure
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post #4 of 9 Old 08-05-2019, 11:50 PM
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Talking

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Originally Posted by repalmer View Post
I'd replace the car with an OEM.
Well that would definitely fix it
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post #5 of 9 Old 08-05-2019, 11:57 PM
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Quote:
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Quote:
Originally Posted by repalmer View Post
I'd replace the car with an OEM.
Well that would definitely fix it

Yeah, that would fix the problem

Dang auto correct!!!

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post #6 of 9 Old 08-06-2019, 02:28 AM
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Well your sig line say: 07 f350 Dually tow boss, Fabtech 6" lift kit with stealth shocks,


Is your truck lifted???



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post #7 of 9 Old 08-10-2019, 11:51 AM Thread Starter
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I spent some time under the truck and on the engine bay and found a pinhole sise in one of the hoses from the coolant filter so I will be replacing the hose for sure. I also notice the coolant filet canister was a bit wet, dried that out but never was it wet again so I need to keep monitoring that. I did remove the cap when it was at normal operating temperature and it had very little pressure. I replace the cap, maybe less than 12k miles ago with an oem.m I also removed the egr valve and it doesn't seem bad to me, what do you guys think?

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It could also just be a small leak that only shows up under normal pressure caused by thermal expansion (so, when it's warmed up and you're driving it). If you have a bypass filter with valves, take one loose from the filter head and use it to pressure up the cooling system until the cap relieves, then close the valve to leave it under pressure. Get out your flashlight and look everywhere on/around the engine, and lay underneath it. It may take a few moments to show up.
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Originally Posted by HeavyAssault View Post
Well your sig line say: 07 f350 Dually tow boss, Fabtech 6" lift kit with stealth shocks,


Is your truck lifted???
Yes, the truck is lifted 6".
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post #8 of 9 Old 08-10-2019, 11:52 AM Thread Starter
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Few more pics of the egr valve.
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post #9 of 9 Old 08-11-2019, 01:26 AM
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Trucks that are leveled or lifted are not showing the coolant level correctly due to the OEM rake angle is now gone. With consideration to your posted pic of the degas tank: Fill till the coolant is sitting at the MIN mark.


EGR valve seems fine/typical to me.
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