Coolant blowing out of degas bottle - Ford Powerstroke Diesel Forum
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Old 01-07-2012, 05:54 AM
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Coolant blowing out of degas bottle

Every once in a while my truck will blow coolant out of the bottle. I have no clue if the cap is coming loose enough to allow this or if I have a major problem. Anybody else have this problem? Thanks.
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Old 01-07-2012, 05:58 AM
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Your head gaskets are toast. Have it studded and new gaskets. Sorry for the bad news but it's just the way it is. SWEET rig by the way!
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Old 01-07-2012, 06:44 AM
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It could also be your EGR cooler. Park the rig on a decline, pull the egr valve and leave it parked like this overnight. (This is a good time to clean the egr valve)
In the morning, check the bottom of the hole where the EGR valve was for the presence of moisture. The soot inside should be dry packed powder. If the soot is greasy feeling or you see any indication of water, your egr cooler has failed.
You would then need to
A: stop driving the truck, or you will have head gasket issues
B: Flush the cooling system
C: Replace the oil cooler and egr cooler (or delete the egr cooler if you can)


If that checks out as not being the issue, try a new degas bottle cap from Ford. When the caps go, they can allow the coolant to puke a little.
Another thing to be aware of is that the coolant level on the degas bottle is wrong. When cold, the coolant should be about 1/4 to 1/2 inch below the add line.

To check for popped head gaskets:
Get a pressure gauge installed into the small coolant line that returns to the degas bottle from the intake manifold. The pressure should not go above 16psi. If it does, your head gaskets are toast.

You should return the tuning to stock when tracking down problems. Once it is all figured out and running right, go back to your preferred tuning.
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Old 01-07-2012, 07:05 AM
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Great advice and I hope for him that it is that simple. Mine - not so much "luck". Second set of heads, a "few" gaskets.
Sorry amigo but you put a tune on 'em expect the repair bill. I'll be willing to bet that 99% of puking problems are you've ended a gasket. Especially if you're tuned, lifted, and puking.
Don't get me wrong, I LOVE my rig and every time I drive her I smile.
BUT '05, lifted, no studs, tuned. You shot your gaskets.
Looking at that sweet rig though you can get her done right and ride on.
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Old 01-07-2012, 07:26 AM
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Quote:
Originally Posted by Rodslinger View Post
Great advice and I hope for him that it is that simple. Mine - not so much "luck". Second set of heads, a "few" gaskets.
Sorry amigo but you put a tune on 'em expect the repair bill. I'll be willing to bet that 99% of puking problems are you've ended a gasket. Especially if you're tuned, lifted, and puking.
Don't get me wrong, I LOVE my rig and every time I drive her I smile.
BUT '05, lifted, no studs, tuned. You shot your gaskets.
Looking at that sweet rig though you can get her done right and ride on.
totally agree with this based on my experiences..
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Old 01-07-2012, 08:56 AM
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Quote:
Originally Posted by LNS4x4 View Post
totally agree with this based on my experiences..
It sucks to get the experiences but it was a flaw from Ford. I hadn't even had mine on a track, dyno, nothing other than street azzhats for years - going to work one day and AAA had to take to FMP to replace a lot.

My sig has what I have but I don't race her like I used to before I thought I had her bullet proofed. If you're tuned and puking, you're down a gasket.
I saw one yesterday hanging out at FMP and the damn rig had been puking for so long I was amazed. To actually see it - hell my last only had the one and was blasting all of my coolant out of the azz of the rig. His was driving like a champ, just puking. When I looked at his heads outside of the rig - I don't know how it was still going.
If you're going to speed 'em up - oh and HELL yeah they are off the handle - that what you see coming out of bottle......fix it and stud it.

ETA - nothing is ever bullet proof. Things break.

Last edited by Rodslinger; 01-07-2012 at 09:02 AM.
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Old 01-07-2012, 06:19 PM
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I hope it's not the head gaskets.I really don't believe it is because it only happened one other time. It doesnt puke it out its just a little. Ive been to the drag strip and pulled over 15K many times and it didn't do it any of those times. I'm gonna try replacing the cap and go from there, and if that's not it it'll be a good reason to put studs in lol.

Last edited by Sunday; 01-07-2012 at 06:29 PM.
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Old 01-08-2012, 04:33 AM
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Quote:
Originally Posted by Sunday View Post
and if that's not it it'll be a good reason to put studs in lol.
Exactly. You REALLY have a sweet rig - keep us updated on it please.
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