ok then if you wanna try it the filter is a little round think under the intake manifold. has 2 banjo fittings going to it and the new one will come with new copper washers. dont reuse the old ones. the tough part is reaching under to undo the clamp that holds it to the manifold.
before you do that go ahead and check you fuel presure for fun.
also if at 150k you haven't had your injectors cleaned, that would be another avenue. i don't mean one of those snake oil, drop it in the tank additive, i mean take it somewhere and have a fuel injector flush done to it.