2006 Boiling Coolant With Video

if it anything like my 4.0. make sure your t stat is a good one, stick on a cooling system pressure tester . do not pump it up, just start the motor and watch the tester. if you are getting compression into the system the gauge will raise fast, from there do a compression test to find which cylinders are your problems,
mine has heads and motor done up by super sixmotor sports . my right side head cracked in the chamber between the over sized valves causing the same problem only worse since mine has a x-charger xstream bolted on

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