2018 50cc GY6 moped starting issue
 

I have 2 Mopeds 50cc GY6 made in 2018
One is green and the other is black.
The black moped starts fine.
The green moped will not start unless I put a shot of starting fluid into the carburetor.
Last year summer of 2020 I replaced both carburetors and put ethanol free REC 90 gas.
Could the carb need replacing again?

I had a cy 50, and did the same thing. Looks like some sort of compression issue. If not magneto misalignment, loose wire to cdi ie weak spark.

The valves come too tight out of the factory. It will run for 20 ton60 miles then it just won't.

And mopeds have pedals. You have scooters.