Coolant pushing out degas bottle

[Chadly329]

I have a 2005 f250 with a 6.0L, I recently flushed my coolant and now it's pushing out the cap of the degas bottle. It's not saturating anything, but I can tell, for sure, that it has been pushing out the cap. The cap is not bowed I've checked it several times, my heads are good, I am wondering what would cause this, the coolant shows signs of dirt/oil in it from the oil cooler so I have decided to replace that and run a bypass filtration kit from sinister for my coolant, at my next oil change. My main reason for posting is to find out why the coolant is pushing out from the degas bottle cap. Thanks for your time.

[dannyboy950]

You overfilling it by any chance, the newest approved fill level is about 3/8 in. below the molded min. Another adjustment by ford.

[Chadly329]

It looked level with the "new improved" ford sticker measuring level

[Tuscany]

How do you know that your head gaskets are GOOD? Did you test for combustion gasses in the cooling system or do a pressure test in the system? A blown oil cooler won't cause puking unless its dumping a TON of oil in the system effectively overfilling it and causing it to puke. Sounds to me if you have an EGR delete your looking at a head gasket job.

[dannyboy950]

The sticker is now obsolete the new level is just below the origional min line.
Next year they will tell us not to get any in the bottle at all instead of fixing the actual cause.

[Int.Tech04]

mine sits just below the min mark when cold, and then sits between min/max when at operating temp. never pushes coolant out or loses coolant. if youre pusing coolant out, you definately have something pressurizing youre cooling system. if youre seeing oil in the coolant, DO NOT wait until your next oil change.

[Chadly329]

Heads are fine, they've been tested on more than one occasion in the past year and a half. My coolant level was a little bit too full, so i took some out, and it didn't push any coolant after this. Another question....Do you have to drop your oil to replace the oil cooler?

[Qholic]

could be your coolant cap is bad...

[dannyboy950]

While it is not 100% necessary it is adviseable to keep from getting it contaminated.
If it is relatively new oil just drain it in a clean pan and pour into a clean 5 gal bucket.
Remember it holds 15 qts so use a suitable container.

When you pull the oil cooler out you will find it sits in a resivoir of oil you need to suck that out and clean or replace the screen with the metal upgraded one as well as the resivoir. Be shure and get all debri and if you wipe with a rag make shure you get all the rag fuzz off. A small shop vac works well, you just may not want to use it for anything else after this. I keep one just for stuff like this a little 1 gal. one.

As far as a upgrade pump I do not know if Ford still has any of theirs but you may be able to find a aftermarket one. In 05 they went to a totally different pump and a redesigned block to accomodate the pump the are not interchangeable.

[Fordtrucktexan]

I was having the same problem and I lucked out - it was a bad cap, I had the original one still on the bottle. Got the new updated cap from Ford for $10.50, replaced a dry rotted upper radiator hose and haven't had a problem since. Now, to knock on some wood...