2003 Explorer, 200k miles and had the timing chain guides come apart on the rear. PLEASE READ ON not the usual timing chain issue. Motor was running good when it started. Towed home started up drove in garage loud but smooth. Pulled motor replaced all guides, chains tensioners. Put motor back in and fired up sounded real good. Had a coolant leak at thermo housing. Shut off and fixed it started back up made a little noise not sure what it was and it died. Wont start again. Has gas, fire the usual checks all good. Figured it jumped time somehow. Pulled intake and right cover off. While turning to get TDC I see something I cant wrap my head around. On one stroke of the engine *only one spot when cranking the engine" there is slack on the glide side of the chain. Tensioner side stay tight all the time but after 7 revs of the motor it is sloppy. Opinions, thoughts comments???? Just cant wrap my head around this. Any opinions would be appreciated. Thanks ahead of time.