Defensive driving means "always expect the unexpected." The first step in driving defensively is to wear the seat belt. See Seat Belts.
Anticipate what they might do and be ready.
Water Pump and Balance Shaft Chain and Sprocket Cleaning and Inspection Engine Block Cylinder Block Balance Shaft
Inspect the balance shaft drive chain guides-(3,5, 8) for cracking or wear.Replace the balance shaft drive chain guides if wear exceeds1.12-mm (0.045-in) depth on the chain guidesurface.Inspect the balance shaft drive chain tensioner guide shoefor wear.Replace the balance shaft drive chain tensioner ...