I am having a problem with the 21mm OKO carb on my son's DRX50
Here is what it does:
Only starts with choke pulled up/on
When chokes is on and then turned off the rpms surge then it gradually lowers and then stumbles and dies.
If choke is left on then it idles great....
When the throttle is applied and let off quickly the rpms still maintain and then gradually reduces the rpms
I removed the air filter and I can see the slide returning to the bottom when I let off of the throttle, but the rpms still are not reducing.....
I ran some race gas in it the other day to see what kind of gain we would see....I drained the whole tank afterwards and went back to 93 octane..
Could this have caused an issue..
I have taken the carb apart and can see the choke valve moving up and down, so I don't know where to go from here
Anyone have some advice?