Why does my Chevy Caprice Classic jerk as I accelerate and as I slow to break? on 1993 Chevrolet Caprice

It happens all the time. It acts like it doesn't want to start sometimes too.

Asked by for the 1993 Chevrolet Caprice
2 answers
Engine misfire and warped brake rotors. (My guess.)
sounds like a motor mount issue...the starting problem could be anything though...any more hints?