its that shaking at idle again!

[89 e30]

Story time!!
So every time I come to a stop with my e30 it starts shaking or might be missfiring not sure and when I start accelerating it stumbles for a sec. If I rev it up to a 1000rpm it stops. Could it be just a spark problem or something else, I haven't replaces the wires in a while. It just pissed me off...thx

[TurboJake]

More than likely a vacuum leak.

[89 e30]

I guess its time for a smoke test thanks

[89 e30]

I found my problem, wasn't a vacuum leak. Cylinder 5 wasn't firing because of bad spark plug wire