my explorer is burning a little bit of antifreeze.
Two weeks ago i replaced my spark plugs and wires put in a K&n air filter and did a full service a couple days later i took a short road trip and mu muffler fell off. now, my truck burned up one of the brand new plugs (i found it because it was idleing rough) and smells of burning anifreeze. I was going to change th head gasket but i took it to an e3xhaust shop and had them put in a full exhaust system. when i picked it up the next morning, the cooling system was still pressurized so what to do?