Throttle issues?

biknut said:

Sounds like you still might have a intake leak.

Click to expand...

I concur, doctor.

Make sure that the carb is tight on the intake. Make sure the the cylinder jug is tight. All of these can also leak air that will mess with your mixture and idle speed.

Good luck!!

Interesting. I Made one of these bikes and I am 15. I had some problems early on but Now it is mostly sorted out. I also have a problem where I am riding on full throttle and it revs and starts to go fast but then will slow down like there is not fuel getting to the engine. I am not sure what to do, I though moisture had gotten in the line but a new batch of fuel indicates no. Also does anyone know where to get a mount to mount the engine on the bike. One of mine broke off and I need some of the screws that hold me mount in. Anyways, I would love to hear an answer soon.
Thanks,
Nate

if it is surging fast,slow,fast,etc., then it is most likely too much vibration at the carb causing fuel to foam in the bowl

That is what I saw! how do i prevent that?

either get the vibration out of the engine by working with the mounts, or use a piece of rubber hose between the carb & the engine, then fasten the carb to the frame

If it is fuel foaming, fixing the mount should stop this from happening.