I am having trouble with my engine and cant get it to run. I have bought the 80/66cc engine. I can’t really figure out the problem and I hope you can help me out. The thing is I can’t manage to keep it running. Every once in a while when I spin up the rear wheel the engine starts for a couple seconds but can’t seem to manage staying on. It seems like it can’t get anymore fuel after it has burned up the gas between the cylinder and the carburettor. I have tried several things, I have tried putting the engine in different angles so the jet can reach the fuel properly, I have tried tying up the bolts, and swapped spark plug. I am sure the carburettor gets fuel because I have drained it several times, and I’m sure the spark works as it can run for 3-4 seconds every once in a while. The clutch is also working perfectly, the piston is always moving when engaged. I have tried blowing through the jet and it is not clogged, also the black thing that moves when throttling up is usually moist so I think the fuel is getting there from the carburettor, but maybe not reaching into the cylinder. I have also tried removing the air filter to make sure it is getting air. I have tried spinning the wheel slowly and I can hear a slight “ssss” type sound. I hope its just the compression and think it is normal. I have even tried removing the exhaust and putting it back on but it doesent seem to make a different, as expected. I would just see if maybe the recistanse could be a factor.Do you have any ideas on what I can do, or look for? I would appreciate your help and I really want to get it to run properly. Here is a video. Thank you.