🔧📏 Valve Adjustment In Progress – DD15 Engine 📏🔧In this video, our specialist tech is performing a valve adjustment on a DD15 engine — and as you can see, intake valves on cylinders #5 and #6 are extremely tight with no slack present. Tight valves can quickly lead to poor performance and long-term engine damage if not addressed on time.💡 Why valve adjustments matter:Over time, heat, vibration, and normal wear cause valve clearances to change. If valves become too tight:• The engine won’t br