...starting out? My Kia shakes and when I'm at a completely stop or if im shifting from 1st gear to 2nd all the way to 4th gear, not fifth, it like takes a while for it to get going and its a very bumpy, jumping feeling, like it doesn't go right away. I just got the spark plugs changed, none of my warning lights are on, what could this be so i can give suggestions when i bring it in? Also, when i press my brakes SOMETIMES it squeaks, what do i need to change, brake pads? Any help would be appreciated, I can't get rid of the vehicle, i don't have the money so I need to fix it, and its getting really frusterating. Thank you. Also, when its just parked and running it'll shake and feel like it wants to jump or something, like something is moving in the engine?? I don't know..