OEM Ford Taurus X Exhaust Manifold

Ford Taurus X Exhaust Manifold Parts Questions & Experts Answers

• Exhaust Manifold, Driver Side
  7T4Z-9431-C
  Q: How to service and repair the left-hand (LH) exhaust manifold on Ford Taurus X?

  A: A service or repair of the left-hand (LH) exhaust manifold starts with taking out the LH Catalytic Converter and the LH heated oxygen sensor (HO2S). The procedure starts with removing three bolts from the LH exhaust manifold heat shield and then it proceeds to take out the six nuts holding the LH exhaust manifold and discarding both the nuts and the gasket. Clean the LH exhaust manifold before studying its condition then dispose of its six LH exhaust manifold studs. The sealing surfaces require avoidance of metal scrapers and wire brushes or abrasive tools to prevent leaks because they can create scratches and gouges; use a plastic scraper and follow packaging instructions for proper cleaning of the exhaust manifold mating surface on the cylinder head. Six new LH exhaust manifold studs must be installed after which torques should be set to 12 Nm (9 lb-ft). A proper second-round torque on exhaust manifold nuts is crucial for stopping exhaust leakage. Install the LH exhaust manifold with six fresh nuts and tighten them through two stages by beginning with 20 Nm (15 lb-ft) followed by an additional 20 Nm (15 lb-ft). First maintain 14 Nm (10 lb-ft) torque when reattaching the LH exhaust manifold heat shield through three bolts before adding the LH HO2S and finally installing the LH catalytic converter.