Honda guys break engine mounts all the time due to the tremendous amounts of torque they produce so Honda owners are excellent diagnosers of broken motor mounts. Heres how you do it. Youll need a friend.

Get in car start it put it in first gear pull the E brake up tightly. pop the hood and prop it securely. While your friend watching the engine bay try to slowly take off (heavy clutch slipping) in 1st gear then reverse. If your motor mounts are broken the engine will move quite a bit. If not youll probably just put some extranious wear on your clutch and possibly stall it.

If its an automatic...dunno what to tell you man...