i recently experiance that my car has been running odd.. like feels like its not running on all cylinders. and something was missing and or knocking.. I went and put gas in it, as soon as i pulled in my drive way,and shut it off.. It had a smell of fuel.. and i started my car back up and it owuldnt start.. i popped the hood and heard fluid leaking as i was turning the key.. and the fluid was leaking out of the EGR.. Mind blower i guess? anyone know what would cause this?