I have a 1990 pick up and I'm pretty new to 22res the issue I'm having is kinda odd when ever I turn the engine off the over flow container bubbles but my truck isn't even close to over heating according to the temp gauge the radiator is getting pressurized Frome some thing else it smells like emissions when u open up the over flow rite after it hapens and it's kinda hazy in it, I'm starting to thing it's a head gasket but I'm not sure

 

The radiator will get pressure from heat. The symptoms point to the head gasket.

 

I some times hear it when I'm driving to and the overflow container is very dirty but the coolant in the radiator isn't that bad

 

Start the truck cold with the radiator cap off, let the thermostat open, if you see bubbles coming to the top every few seconds pretty sure the head gasket went

 

Thanks Jasonyota it did exactly that can it crack my block if I don't adress the problem soon, I don't know how long it's been doing this and could that contribute to a hight idle kinda like if u had a base gasket leak on a 2stk dirt bike and make it run lean.