Degas bottle leaking...Need help.
Thread Starter
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Senior User
Joined: Oct 2009
Posts: 374
Likes: 0
From: Ontario
Degas bottle leaking...Need help.
Guys, i've been chasing this problem for quite some time and can't figure it out. My degas bottle LEAKS, doesn't even puke. Headgaskets were tested by ford tech STRONG. ECT + EOT see about 6-8 degrees difference when cruising. Coolant is NOT overfull- never above MIN line.
Sometimes after leakage, i will not add coolant, just clean up bottle. It seems the less coolant in the bottle the less it leaks. I can't figure out weather the leaking is due high water temps, high boost, high load ect. Sometimes i will experience leakage after water temps no more than 200 degrees...BTW i am NOT towing anything. I have diesel site coolant filter, and have tried running with valves open and closed, and dont seem to see a difference.
I have tried every NAPA locally and apparently ther's no such thing as a combustion gas analyzer...I'm really starting to get tired of cleaning bottle and adding coolant...what's my problem??
Sometimes after leakage, i will not add coolant, just clean up bottle. It seems the less coolant in the bottle the less it leaks. I can't figure out weather the leaking is due high water temps, high boost, high load ect. Sometimes i will experience leakage after water temps no more than 200 degrees...BTW i am NOT towing anything. I have diesel site coolant filter, and have tried running with valves open and closed, and dont seem to see a difference.
I have tried every NAPA locally and apparently ther's no such thing as a combustion gas analyzer...I'm really starting to get tired of cleaning bottle and adding coolant...what's my problem??
Fleet Mechanic
Joined: Jun 2006
Posts: 1,589
Likes: 20
Exhaust Gas Test Kit
Here is what you need.
Discount Automotive Tools - eToolDirect
This test kit confirmed I had either stretched head bolts or bad EGR cooler. I had a very small exhaust gas leak into the coolant. Had to really look at the blue fluid to see any green but it was there. So I replaced the head bolts with ARP studs and the EGR cooler. No more puking.
DSMMH
Discount Automotive Tools - eToolDirect
This test kit confirmed I had either stretched head bolts or bad EGR cooler. I had a very small exhaust gas leak into the coolant. Had to really look at the blue fluid to see any green but it was there. So I replaced the head bolts with ARP studs and the EGR cooler. No more puking.
DSMMH
Thread Starter
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Senior User
Joined: Oct 2009
Posts: 374
Likes: 0
From: Ontario
Here is what you need.
Discount Automotive Tools - eToolDirect
This test kit confirmed I had either stretched head bolts or bad EGR cooler. I had a very small exhaust gas leak into the coolant. Had to really look at the blue fluid to see any green but it was there. So I replaced the head bolts with ARP studs and the EGR cooler. No more puking.
DSMMH
Discount Automotive Tools - eToolDirect
This test kit confirmed I had either stretched head bolts or bad EGR cooler. I had a very small exhaust gas leak into the coolant. Had to really look at the blue fluid to see any green but it was there. So I replaced the head bolts with ARP studs and the EGR cooler. No more puking.
DSMMH
Yes i forgot to mention have tried a few new caps.
Could it really be headgaskets if ford tested them strong?? I don't seem to have loss of power and i have no white smoke...I trying to remember now if i had this problem BEFORE i installed my coolant filter system. I'm thinking it could be a cause?
Senior User
Joined: Apr 2007
Posts: 368
Likes: 0
From: Kansas
Mine did the same thing but only when I was towing. Other than that it never leaked. I didnt have a tuner at the time either. The mechanic changed two caps and the degas bottle. After that he told ford that he changed the EGR cooler (which he didnt) and it still was having issues. Thats when they approved the head gasketes. When he got it apart, low and behold between two cylinders the gaskets were blown. While he had it apart he did the EGR and Oil Coolers. I gave him the ARP studs and haven't had a problem since. I have an SCT tuner now and have towed plenty with it and not one drop comes out of my degas bottle. If you have a good mechanic where you are, they can work the system to get your head gaskets replaced, they just have to take certain steps in order to get ford to bite off on it. GOOD LUCK.
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Junior User
Joined: Feb 2008
Posts: 67
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Mine did the exzact same thing and it turned out to be warped heads new set of heads and new arp studs good as gold
Rmoore
03 6.0 lariat
Rmoore
03 6.0 lariat
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New User
Joined: Dec 2010
Posts: 20
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From: southern california
Napa part # 700-1006 is what i use. It's called a block tester. A plastic cylinder sits on top of degas bottle, you fill to the line with blue fluid, if it changes color you got a problem. Very effective tool.
Thread Starter
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Senior User
Joined: Oct 2009
Posts: 374
Likes: 0
From: Ontario
Ford headgasket check is a WOT run with pressure tester correct? If so perhaps when i take it to dealer with stock tune and they test gaskets, the truck doesn't rev high enough to easily detect the gaskets? I then take truck back load Elite tune, shifts at 4000rpm and now gasket failure signs become visible?
Looks like i'm in for some work anayways...
Looks like i'm in for some work anayways...
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
Ford headgasket check is a WOT run with pressure tester correct? If so perhaps when i take it to dealer with stock tune and they test gaskets, the truck doesn't rev high enough to easily detect the gaskets? I then take truck back load Elite tune, shifts at 4000rpm and now gasket failure signs become visible?
Looks like i'm in for some work anayways...
Looks like i'm in for some work anayways...
remove the tune and see if it still happens.
tuning changes the cyclinder head pressure
Thread Starter
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Senior User
Joined: Oct 2009
Posts: 374
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From: Ontario
i appretiate the reply cheezit, i take your word as a tech. i am not in doubt i have stretched bolts, even though elite made me a " no head stud tune" LOL. just find it weird i have no power loss! now i need to investigate weather or not i have warrenty left, otherwise i'll be doing it in the garage!
Cargo Master
Joined: Feb 2009
Posts: 2,111
Likes: 0
From: Yreka, CA
30k miles ago I had the whole system redone, new heads and all. I still leak a little coolant out of the cap. I don't think the dealership replaced it though, so it could just be a bad cap in my case...
When my headgasket popped there was no power difference.
When my headgasket popped there was no power difference.