Well I have an 86 with the 2.8l v6. Last year I got the smog check done and it passed. The tech adjusted the carb at that time. About a month ago it started running like crap. It does a bog/stutter while give it gas/driving. After it warms up of course. While cold it runs fine. It has the E2SE varijet carb. What adjustment is there in the carb to adjust the stutter out. Under the little screen in the top of the carb? This is where the smog tech adjusted it to run better to pass smog. Not too sure about this.

All ignition has been checked and is set correctly.