Originally Posted By: Nick1994
I would absolutely hate doing the rear valve cover on a 1mzfe, intake manifold has to be removed, which I replaced the IM gaskets on my brother's.
It's really not that bad, only the upper intake plenum has to be removed. The hardest part is maneuvering the wiring harness out of the way so you can get the cover lifted up.
It does give you easy access to replace the plugs though, plus the O2 sensor if you want or need to do that. Also the power steering pressure hose which is going to be leaking on a high-miles car.