So trying to determine what the issue is here. Just purchased a 2001 Durango 4.7 for a steal of a price. I am trying to figure out what is wrong with the engine. A little background is that is has been sitting about two years. I am going to empty the gas tomorrow in it but would like some suggestions as to what else. Thanks. Here's a video I got of hearing the sound with video and tell me what you all think it may be. Just click the pic.TIA.