Herky Jerky, Car Surges @ 3000 RPM Options

[dralf]

I need a bit of guidance.

I have a 1975 2.0 FI Teener. I have recently noticed that when I drive around town and the engine has warmed up a bit, the engine sputters, surges, and has little to no power near 3000 RPM. It sometime even has hints of a back-fire. It gets better as the revs go up but all in all it seems to have less power than what it did just a month ago. Naturally it idles poorly also, despite my having turned up the idle screw at the air cleaner. I have not messed with any of the FI components yet, but I am suspicious that somewhere there is the problem. I quickly looked at the points and the dizzy and that is all new from the PO.

Any thoughts or hints as where to start ? I recall reading about two months ago someone had similar problems and there was check list created…..perhaps someone has the link to that or can give me a trouble-shooting starting point (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif)