So, I got a Chinese carb for $16 on Ebay. Replaced the carb and the hoses. It started on the first pull. Ran great, ran with the choke off, seemed at least as fast, maybe faster than ever before. Used a whole tank of gas. Two days later, refueled it. This time it was harder to get started, I think it might have started finally on full throttle, but I got it going and it was fine. It had been idling just a little slow, so I did turn the idle stop screw in one or two turns to make it idle a little faster. Used it 15 mins. Went to start it again, won't start. It has spark. Tried starting fluid, no go. Let it sit overnight, plug out, tried again today, no go. It won't fire even once. I also tried it with a new spark plug.
OK, so here's the question part. I put my finger over the spark plug opening and cranked it. I can feel a little suction, but never any pressure. That sounds like trouble, yes? I'm not as experienced with two cycle engines, but I would think when pulling the cord, it should try to blow my finger off on the compression stroke, yes? Valve stuck? kaput? just get a new one?