My question is how can you check if it's the mounts are bad in your car?

I've already replaced my front mount for engine since my dads buddie knew to check that one in paticaler by,

me holding brakes and reving it up. Though my question is how do you check if the other

mounts are bad being the engine ones?

 

well majority of the tym the side mounts dont go bad just the front an rear mount and that is how u check the mounts get a flashlight and use it to look at the rear