So I blew a water pump in my 4 Cyl 4.0 L engine going up the mountains and over heated my engine. fixed water pump and hoses that also blew. At the time the oil was really hot and oozed out between the head and the block from being so hot. I also changed the oil and now it seems to be blowing lots of white smoke and it smells sweet. there is no knock. the one rad hose i changed is bent a bit so I'll fix that with wire wrapped around it to make the bend easier. Is it hard to change the Head Gasket? I am an ok backyard Mechanic that had access to a shop with all the tools. Also how long would it take?