Hi I need help with a 150cc enduro that was running fine but now is starting to cut out and not run for more than a second or so. I got it off a trade and don't know much about it but it has clean title so I would like to get it running good. When I bought it, it didn't run so I replaced cdi and it got spark then ran good for about 20 min the cut out and wouldn't start anymore. I left it for a day, then started and idled fine but then died after 3 min. I replaced the ignition coil and now it only will run off starting fluid for about a second, any ideas? It still has spark. Any help would be much appreciated!