I was on my way home from work. Once I got home I noticed smoke coming from the hood. There was a pin hole in the water jacket hose, I figured an old hose so I replaced it. Drove it fine for a couple of weeks, then at work I noticed I was leaking coolant, it was dripping at a slow pace from the area around where the lower radiator hose meets the water pump. I checked the hose connection and everything seemed fine, needless to say over the course of the day, it drained all my coolant. Luckily I had some extra coolant in my truck and used that with some water from my office. It got me home and my truck has been sitting since. While running there are some bubbles in the expansion tank. I'm thinking maybe a blown head gasket? or something more serious? Let me know your thoughts.

 

 

I thought I bled the system well. Everything seemed normal. Power seems normal, no oil in the expansion tank, no coolant in the oil, no white smoke. I saw all the bubbles in the expansion tank and just thought I had the start of a blown head gasket. I put coolant in it last night and seems to be holding coolant fine (no drop in coolant levels, no puddle underneath). I have a new water pump/timing chain/oil pump I've been pushing off putting on. Looks like I'll do the job this weekend and see what I find.