How the heck do I actually replace the thermostat? Have tried 4 times already and never succesful without a leak. No room to reach it and very hard to do. Any suggestions?
2002 F-150 (4.2L V6)Make sure both surfaces are clean and free of pitting or deep scratches.
Glue the outer edges of the thermostat into the water outlet adapter.
Glue the gasket to the adapter.
Wait until the glue has set up to hold every thing in place before you attempt to bolt the outlet to the intake manifold.
To install the bolts use a 1/4 inch set with a long extension and a universal start the bolts and hand tighten evenly, then tighten to 80 inch lbs.
Note: On small surface scratches or pitting RTV can be used to fill in the imperfections. Make sure the outlet is not warped, use a straight edge to check the outlet and manifold if need be. A little patience can go a long way on tedious jobs like this one.