91 318is troubleshoot

[moving3e]

First off the car sat for about two to three months. fired it up and began driving it. Here is the issue. when the car first starts sometimes it spits and sputters and downright misfires and sometimes shuts off then almost as quickly as it began it goes away and drives completely normal

[Matt-B]

AFM/fuel pump

[trackjunkie21]

bad gas

[hyperE30]

Also check the tps