I have a David Brown 1200 diesel and I need help with some engine problems. I started it the other day and let it warm up for awhile and it was running fine. When I started to drive I noticed there was smoke coming from under the engine support on the right hand side. I assumed a mouse had gotten in there and built a nest out of the hay in the barn and it was starting to burn.I shut the engine down and just as I did I heard a loud pop and I saw gasket material on the ground. I pushed it in the garage and the gasket that blew was the valve cover gasket. I think what had happened was the tube that comes off the top of the valve cover and vents below the engine was blocked because of the nest created by the mouse and the pressure in the engine got to high. When I took off the valve cover I noticed some red fragments in the front of the head so I assume something broke in or around the number one cylinder. I tried to crank the engine over and it wouldn't turn. Any ideas what the red fragments could be. They are hard but they don't feel like metal, I can crush them between my finger nails but they also aren't gasket material. Looks like I'm going to have to tear the engine apart, anybody have any idea what I might find when I do? Also, does anyone know where I can get a shop manual for it, perferably mail order or on the net, there isn't a Case dealer anywhere near me. Thanks.
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