Over the about the past month the truck has puked about 3 or 4 times. Ive noticed it only happens when i romp on it or go wot for a little. When i check the coolant level theres coolant blown all over the hood. Tonight i was messin around with my friend that has a stock 6.4 and i passed him gettin on it and when we pulled over up the road he said that coolant blew out from under my truck and even onto his windshield. Any ideas? Blown head gasket??