If the passages seem clear, and the bolt is hollow, It may be as noted below a cam bearing out of alignment with the oil hole. To check, remove the rocker assembly, and use a brass rod, or copper wire to feel in the hole all the way to the bottom. The wire should be touching the cam journal through a hole in the bearing shell. If it is, turning the engine very slowly by hand (incrementally) will allow the wire to go deeper when the oil passage aligns. If it never aligns, the cam bearing is probably the issue. Do not rotate the engine with the rod stuck into the cam journal, it will cut off a chunk that cannot be removed without surgery... Jim
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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