F 150 2WD V8-4.6L (2008)
20. Remove the 2 thermostat housing bolts and the thermostat housing and discard the O-ring seal.
21. Remove the thermostat.
22. Remove the 9 intake manifold bolts.
23. Remove the intake manifold and discard the RH and LH intake manifold gaskets.
Installation
1. CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These
tools cause scratches and gouges which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
Clean the mating surfaces of the cylinder head and the intake manifold with metal surface prep and silicone gasket remover. Follow the directions
on the packaging.
2. Install the intake manifold in the following sequence.
1
Position the new intake manifold gaskets.
2
Position the intake manifold.
3
Loosely install the 9 intake manifold bolts.
3. Tighten the intake manifold bolts in the sequence shown.
^
Tighten to 10 Nm (89 lb-in).
4. Install the thermostat.
5. Install the thermostat housing and a new thermostat housing O-ring seal.
6. Install the 2 thermostat housing bolts.
^
Tighten to 25 Nm (18 lb-ft).
