When I enlarge the thumbnail pic it's too blurry to get a clear look. That would worry me too. Hope it's not whats left of a roller tip from a lifter. Does the engine have any loud tapping noise when running?
A forum community dedicated to Diesel engine owners and enthusiasts. Come join the discussion about performance, builds, ecodiesel, towing capacity, modifications, classifieds, troubleshooting, maintenance, and more!