[bobcowan]

I had a similar problem with a previous carbed car. All of a sudden it started to run bad. It ran, but not nearly like it did 10 minutes before.

Most diagnosticians will tell you that a carb is a very simple device. EWven when it has a lot of neglected years and miles, the carb will still continue to perform reasonably well. If the engine suddenly changes, it's probably not the carb. Look at fuel delivery and ign ition first.

So, that's what I did. Checked fuel prssure and flow. Took the ignition apart, inspected everything, replaced a few things. Bypassed the CD ignition box. Did everyt hing I could think.

Finally, I said, "OK, time to look at the carb". I pulled the front bowl off, and found a small chunk of FOD stuck in one of the primary jets. No idea what it was, or how it got past the filter. Maybe it was stuck in the bowl out of the box? Anyway, removed that, put the bowl back on, and it ran like a champ. Problem solved.