Vento bogs and cuts out

[live_to_ride]

I have a 2008 Vento Triton LI scooter. It has roughtly 900 miles on the scooter. The scooter is all stock. It seems that I am having problems with the scooter running. Lately I would be out driving around and suddenly the scooter begins to bog and then it shuts down. Once the scooter has shut down it then doesn't start right away. I have to kick start it continually for it to finally start.

My first thoughts were that the carburetor had some bad gas and needed to be cleaned. I took the entire carb off and cleaned it. Put the carb back on and the scooter fired right up. I then took the scooter out and it bogged and cut out again. Now I am thinking its the air/fuel mixture screw. Currently the a/f screw is turned out 1 1/4 turns. My thought was the scooter is running too rich and actually floods itself out.

Can you Pro's here give me some insight as to what I should try to correct the problem???

Thanks in advance.

[mpathus]

You could be right about it being too rich, if your ambient temperatures are super high. Have you tried leaning out the a/f pilot screw 1/2 a turn yet?

Till the "Pros" chime in: Did you discard that tank of suspect gas after your carb cleaning?

I mention this because just today I was at my local ACE hardware/small engine repair counter and saw a bottle filled with fluids that had separated. The guy there confirmed that it was a sample of old 2-stroke fuel that had gone south.

I sometimes wish our fuel tanks were clear so we could see what's is going on in them.

I'd blow out the fuel lines to be sure they are clear, install a see-through fuel filter so you know that fuel is getting to the carb reliably, and add some Seafoam to a fresh tank - then go from there?

[zeonsredcomet]

What range is the bike bogging out at? Meaning is it bogging at say 1/4 throttle or WOT (wide open throttle) or 1/2 or 3/4 let us know when it normally cuts out.

[live_to_ride]

Thank you for the responses.

I did drain and empty the tank and refilled with new Premium fuel. While I had the carb off and the tank off I replaced the fuel hoses with see through Tygon hoses to ensure there was nothing gummed in the hoses.

When I am climbing a pretty steep grade I will have the throttle between 3/4 and WOT. Its only when the grade then levels out and I back off the throttle does the bike bog and cut out.

When I go to try and restart the bike it doesn't want to fire. I continually have to kick start the bike in order for it to start. I would almost appear that the cylinder is loaded with fuel. That is why I was wondering if I was running too rich.

[Old School]

Sounds like it's flooding out when you let off the throttle. Have you done a plug chop?

[live_to_ride]

No I have not done a plug chop. Do you recommend doing a plug chop at different RPM ranges?

[Old School]

No I have not done a plug chop. Do you recommend doing a plug chop at different RPM ranges?

Do one at WOT first. Then do a different one at 1/2 throttle. That's where I would start.