Last week i had noticed a slight mis when accelerating but about 5 days ago while on my way home from work a loud screech came from under my hood and then my check engine light proceded to blink. I got it looked at and am being told its the random misfire code. now ive been doing some searching here and read about possible things to fix it and i was wondering is there any thing i should specifically replace first. sorry if this is a re-post but i didnt see anything like this just lists of what it could be.

thanks in advance.

Also its a 99 zr2.