I have a 2003 ford explorer that I believe has a timing chain failure. Before I knew anything about the issues with the vehicle, I could hear (What I know now was) the timing chain rattle. The vehicle just whimpered out on me one day on the highway over a year ago. I was pissed and just bought a jeep so I wouldn't have to deal with it. I have since rolled the jeep (...LOL) and am wanting to repair the Ford. Here is where I'm at.... I have both valve covers off, Cassettes on both banks seem to be in good condition, taught, with the tentioners and guides in good condition. I cracked the left bank valve cover right on the damn seal, cheap plastic piece of crap. Another 50 bucks added to the project. When I turn the Balancer clockwise, both Cassettes seem to turn without problem.. It's a bitch to turn, takes all my strength though.. Not sure if thats normal. After figuring out I had spark and fuel, I had a shop do a compression test last year after the engine failed.. And there were problems with the results, I planned on junking the vehicle and didn't even write down the results. I was sure I would find something wrong with one of the cassettes so I didn't bother going out and buying a new battery to be able to do a compression test before taking it all apart. So my question is, Where do I go from here? Should I pull the timing cover, Just pull the whole engine? Set the damn thing on fire.. What is the quickest route to find the failed components from here?