KLR oil leak
I know the damage on the KLR 650 from one of my own vehicles but have not seen it happening myself as it was before I took over Le Cap.
The disintegrating cam journal is caused by lack of oil. The ex cam on the decompressor side is furthest from the oil feed into te cam journals and will thereby be affected by intermittend oil supply first. The location on the hot side of the cylinder head might contribute as well.
The fit of the decompressor under the valve cover is quite tight and the decompressor quickly knocks a hole into the valve cover once the journal goes. I would put the low oil level as culprit and the hole in the valve cover as sign of the engine exitus.
All my older KLR's (KL650C) started to use oil after 55000 to 60000 km. The oil consumption would reach 1.5l / 1000 km at around 70000 to 75000 km making a rebore necessary. On my lower mileage engines (KL 650A 2004 / 2005 +/- 30000 km) the oil consumption is still marginal.
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