Timing Cover or Crankshaft Seal Oil Leak Problems: Certain Mazda3 and similar SKYACTIV engines are prone to oil leaks from the front timing cover and related crankshaft seal as they age. See our blog post for an article about how we repaired a Mazda 3 Oil Leak.
What needs to be repaired or replaced: Repair usually involves resealing or replacing the timing cover gasket and related seals, and cleaning residual oil from the leak area, sometimes combined with replacing the accessory belt and tensioner if they are contaminated with oil.