Exhaust Manifold - LH: Installation

All engines 

CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs, or other abrasive means to clean the sealing surfaces. These may cause scratches and gouges resulting in leak paths. Use a plastic scraper to clean the sealing surfaces.
1. Clean the sealing surfaces with metal surface prep.
2. Install 8 new exhaust manifold-to-cylinder head studs.
   • Tighten to 12 Nm (9 lb-ft).

4.6L (2V) engine 

3. Using new exhaust manifold gaskets, position the LH exhaust manifold and install the 8 new nuts in the sequence shown.
   • Tighten to 20 Nm (15 lb-ft).
Fig 1: Left Exhaust Manifold Torque Sequence - 4.6L
Courtesy of FORD MOTOR CO.

5.4L (2V) engine 

4. Using new exhaust manifold gaskets, position the LH exhaust manifold and install the 8 new nuts in the sequence shown.
   • Tighten to 25 Nm (18 lb-ft).
Fig 2: LH Exhaust Manifold Nut Tightening Sequence
Courtesy of FORD MOTOR CO.
5. Position the Y-pipe flange and install the 2 RH and 2 LH nuts.
   • Tighten to 40 Nm (30 lb-ft).

4.6L (2V) engine 

6. Install the EGR system module-to-exhaust manifold tube and tighten the upper and lower fittings in 2 stages.
   • Stage 1: Connect the upper and lower fittings and hand-tighten.
   • Stage 2: Tighten to 42 Nm (31 lb-ft).
Fig 3: Exhaust Gas Recirculation (EGR) System Module Tube
Courtesy of FORD MOTOR CO.

All engines 

7. Install the engine cover. For additional information, refer to INTERIOR TRIM AND ORNAMENTATION article.