hello i have a 01 durango 4.7 miles had it for 2 years oil changed every 3k runs fine uses no oil jus uses water i suspect a blow head gasket it will use a gallon in 800 miles when it is first started in the morning i see a puff of smoke and can smell burning antifreeze for a few swconts then all is fine well when i filled it up with water yeaterday i noticed it is bubbling out of the radiator cap and when i put the cap on it will be pressurized in under a minute then when shut off water willl come out of the overflow tank so i know i am gettein compression in the engine somehow so where ther any problems with the head gaskets or anything else it could be?? how big of a job are the head gaskets? also the rear end makes noise too when you make a turn from a stop it kinda grinds under acceleration it has the limited slip rear could the clutches be bad?? any ideas on what to do next thanks
chris

 

Replace the radiator cap. They are very cheap. I have heard that some of the over the counter stop leaks can work but I must steer you away from those product's. They can cause your water system to clog up. You might just have to do the head gasket and all I can say is have fun.

 

I have an 01 with the 4.7 a couple years ago started something similar to that and it was just the oe cap was faulty the spring was messed up or something. A cap from autozone cause that is all that was nearby and it has been fine since