Exhaust Manifold: Installation

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Install the 7 new exhaust manifold studs.
- Tighten to 17 Nm (150 lb-in).

NOTE: Failure to tighten the catalytic converter nuts to specification before installing the converter bracket bolts will cause the converter to develop an exhaust leak.

NOTE: Failure to tighten the catalytic converter nuts to specification a second time will cause the converter to develop an exhaust leak.

Install a new exhaust manifold gasket, the exhaust manifold and 7 new nuts in the sequence shown in 2 stages:
- Stage 1: Tighten to 48 Nm (35 lb-ft).
- Stage 2: Tighten to 48 Nm (35 lb-ft).
  
  Fig 1: Identifying Exhaust Manifold Nuts Tightening Sequence
  Courtesy of FORD MOTOR CO.
Install the exhaust manifold heat shield and the 4 bolts.
- Tighten to 10 Nm (89 lb-in).
Connect the HO2S electrical connector.
Install the exhaust downpipe and exhaust intermediate pipe. For additional information, refer to EXHAUST SYSTEM .