exhaust problens

my engine spits black s#!T out of my tailpipe. is it a bad head gasket, carbon build-up or what. i'm leanin towards the head gasket cuz i'm losing a little water/antifreze but i think its both becaust the stuff is black and it barely uses oil at all

sound like the head gasket check under the hood if you got black spots on the inside of your hood its a vaulve gasket or head gasket I had to replace both and shes all better now also if your truck is bagged check your muffler system for holes? and you Catilitic converter that could cause the black shit also hope this helps good luck with it and remember IF you see a cop drag on his azz!!! AHAHHAHHAHA