Volkswagen V10 FSI Family

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Problems

All Vehicles

• Carbon deposits (needs cleaning every 40-70k miles)
• Fuel injectors:
  • May leak or get clogged
  • If not fixed, this may cause the O2 sensors to fail, and replacing those may require engine removal on certain vehicles
• High pressure fuel pump failure
• Oil leaks:
  • Valve cover gaskets
  • Spark plug tube seals – causes misfires, fixing may require engine removal on certain vehicles
  • Oil pan
  • Oil filter housing
  • Front crankshaft seal
  • Rear timing chain covers – fixing may require engine removal on certain vehicles

Certain Vehicles

• BSM and BXA engines: Variable intake manifold:
  • Plastic components in the intake manifold become brittle over time, which may result in the flaps getting loose and causing a loss of power or misfires
  • In extreme cases, broken pieces of plastic may fall into the engine and cause internal engine damage
  • Inspect the inside of the intake manifold with an endoscope, or listen for a rattling noise between 1000-2000 rpm
  • Usually requires replacement between 60-100k miles