no coolant in degass bottle

[Powersmoke]

hey guys i have 2004 6.0 with a 5'' straight pipe exhaust afe stage 2 and spartan free tunes. recently i noticed i have no coolant in my degass bottle. its bone dry. i'm assuming this isn't good. i had the coolant at the minimum line like your supposed to, cause it used to puke a little bit under high boost or a load on the motor. after running the tunes for awhile it basically went dry. i guess what i'm asking is there an internal leak somewhere or what? is it evaporating? its not leaving a puddle and there's no white smoke at all. i tuned back to stock the truck has 113,000 miles stock hg's and no egr delete YET!

[6.0DSLPWR]

Im not sure but Im thinking egr problem. I would park the truck with the front pointing downhill or jack up the back end and pull the egr valve. If the egr valve is wet and you see coolant down in the intake then youve got a cracked egr cooler and its time to do a egr delete.

Hopefully others that know a little more will give you some ideas on the problem

[mudrunninpig]

Originally Posted by 6.0DSLPWR

Im not sure but Im thinking egr problem. I would park the truck with the front pointing downhill or jack up the back end and pull the egr valve. If the egr valve is wet and you see coolant down in the intake then youve got a cracked egr cooler and its time to do a egr delete.

Hopefully others that know a little more will give you some ideas on the problem

I agree this a good place to start diagnosing the problem