I'm not trying to jack up the car, but the engine for the same bolt-clearance problem. Even though I took the engine mount loose, the engine is barely moving.

I've got an '03 GT model, and it is in need of a new tensioner. Today, I went to replace it, but when I went to jack up the engine, the engine moved minimally and then the rest of the car went with it. I took the enginge mount loose that is next to the power steering unit. Is there something here th...