I changed the intake gaskets top and bottom along with valve cover gaskets on my Ford F-150. After I finished it was hard getting started but I finally got it started and now it sounds like the valves are knocking. I changed the oil, but they still sound like they're knocking. Do you have any ideas what could be wrong?
I'm not sure how the F-150 is setup but if you had to remove the injectors to remove the valve cover or intake, check that the injector seals are still on and the injectors are down tight, or this can create a knock.
You've either got the valve covers on the wrong side or it's turned around backwards.