The problem though, is that when I start it, regardless of choke position, and regardless of positioning of the two adjustment screws, it takes off with a super high RPM. It’s actually running so fast that the exhaust will start to glow red if I run it more than a few seconds. I’ve had the thing running before, it was never anywhere close to as loud as it is running now.
I’ve checked gaskets and o-rings and everything appears good on that front. The throttle valve (I’m a bit new to carbs so forgive me) that moves the pin up and don when the throttle is pressed appears to be in as far as it will go when i put it together, and when pushing and releasing the throttle the valve has roughly a 1/8" of movement, but seems to return to the normal position correctly when the throttle is released. Also, when I push the throttle, it des nothing to change the RPM’s, doesn’t speed up or slow down at all that I can notice.
When i took it apart I took pictures but have since had a phone mishap and lost them all. Everything internally I’m 99% sure is where it should be. There are two hoses on the outside of the carb, one on the bottom that is the overfill drain, and the other is up top with the cylinder that the throttle valve slides into. The one up top is not connected, and I can’t find anywhere to connect it. I’m thinking it’s a pressure vent, but maybe it does have an actual place to go? I tried blocking and unblocking the top tube to see if it had an affect and it did not.
I have been testing it with the gearbox in neutral. It I put it into gear the wheels start spinning fast.
Anyone have any thoughts on what the problem is?
