A little jerky
 

I have a question.
My 87 non turbo FC will jerk when i let off or press on the accelerator quickly.
I have questions that maybe a mount isn't tight, or is broken, but i don't really know what could be the problem. It's not a hesitation or anything, just a little jerk upon initially pressing on, or letting go of the gas quickly. It just feels like something may be loose, I would just like some input. thank you