Engine mounts, how do you check them?

[NedR]

'95 850, non turbo
There is suspition my exhaust manaifold flex joint failure is due to one or more bad engine mounts. Anyone have experience with which mounts fail and can you check them w/o total removal? I see a front and a back mount as well as one on top of the engine. There appear to also be mounts at each corner of the sub frame.

[HAVAUTO]

you may have a broken upper mount (on top of the engine) move from side to side if it moves a lot it's broken