I have a Lifan 125cc that I bought new on Amazon in 2014 for $210 even with the carb, manifold, harness, angled air filter, and everything else. I did pick it up at their store so saved shipping. Even at 100 degrees outside when I start it cold with choke on, let it run until it starts to die (even reving), then take choke off it’ll die at idle so I either turn the idle up for a few minutes and let it warm up or keep reving it for a while until it idles perfectly, but even then when I rev it pops for a a couple minutes, but after another minute or so it idles and runs perfectly. Just kinda weird as popping usually means carb adjustment but I’ve tried doaling it in better but it just gets worse I just decided it’s super cold blooded. Anyone else’s do this? Wish I’d bought two as complete ones like mine have practically doubled in price. I did buy 3 Predator 212cc’s in 2012 as they were only $79 when they first came out. 2 are still running strong and the other only broken in but never installed in anything.