legacycentral bbs

so latley the last few weeks, when i go to start my legacy in the morning, it starts hard, i dont mean turns over and over, it starts but runs real rough, long enough for me to jump out of the car and pop the hood and witness my motor rocking back and forth quite alot...i crawled under and no motor mounts are broken...this just started out of the blue...any suggestions as to what might be causing this? almost sound like the timing is off, but it runs beautifully after a few minutes....
Thanks everyone
sam

It's possible that you have a weak spark plug or something. Sometimes that can cause misfires when the engine is cold but not when it's warm. So maybe your engine is running on 3 cylinders briefly after a cold start.

sounds like an easy way to find out, ill pick up some plugs asap then...