Ok, I have a bit of an issue, I bought my 88 zuki, drove it no problem for the first day. After that I was driving and after about 20 min. It started to studder and then shut off. It would attempt to crank over, but wouldn't start. I held a screw driver in the carb to hold it open, and depressed the gas pedal all the way down and it started. Drove for a few blocks then shut back off. I was told it was the carburetor, so I bought a used one, (looked slightly used) installed it today. The trucks RPMs hold at 1100, and the engine sounds fine. Has this ever happened to anyone? Or can anyone please advise me as to what it could be? Maybe the in line fuel filter???