help spitting coolant

[kidbaloo]

every time i pull my trailer or boat my 04 6.0 spits coolant out the radiator cap i have replaced the egr and oil cooler the ford techs want to start replacing head gaskets but they say that it is only a guess and they dont think its the prob has anyone else heard of this problem and have any other suggestions

[mschn99]

is your fan clutch working right?? have they replaced the cap?? where is the coolant on the bottle?? It should actually be a little below the low line cold...

[Logan]

Oh yeah. We like to call it puking. It is pretty common especially if you are running hot tunes. Some people have had luck replacing the cap itself. Also, do you have the fluid at the min level and not the max level? There was an update about that.

[Logan]

Oh, and to the ORG

[kidbaloo]

dont know about the fan clutch but have replaced 2 caps and the reservoir the coolant level is right below the fill line the truck doesnt heat up or over heat it just builds to much pressure under a load and spits the coolant out of the cap

[kidbaloo]

im not running hot tunes or any other kind of chip and the amount of cooloant is pretty substancial i went through about 1 gallon in 60 miles

[Logan]

Dang, thats not good. Maybe Marc will check back in.

[mschn99]

WOW..thats a lot of coolant...

I only see one of three possible causes IF the egr and oil cooler are fine.....

restriction (sand from the block casting, plugged radiator, etc)

bad fan clutch

blown head gaskets...

where it doesnt get hot though...that makes me wonder about the head gaskets...normally the motor should at least have a temp spike if the headgaskets are blown.....so that doesnt really match up....

Did the oil cooler ever fail in this truck?? as in was there ever oil in the cooling system?

[kidbaloo]

no there hasnt ever been any oil in the coolant not that i know of but i have only had the truck for about 6 months though so i guess its possible that it did before i got it i have also noticed a gradual loss in fuel mileage when i bought it it was getting about 13 bot now i only get about 9 i do have 38 inch tires and a 6 inch lift so i can understand lower mileage but that bad i was wondering if bad head gasket could also be a factor in my fuel mileage.
by the way i appreciate the help and suggestions thanks

[Logan]

Fuel milage maybe due to winter blend and/or ULSD.