Roketa Tahiti 150cc stalling and dying when stopped  By  johnathonkreider (Read 4,691 times)

Hey everyone! Update number 2.

So, I decided to readjust the valves again, at top dead center. One problem, though, is that I had messed up with my feeler gauge, and I found out that I had actually used a .008 instead of a .005. I only have a .008, and because of that, I adjusted it to .008

Then, I tore apart the carburetor and DRENCHED every part that moved or looked like it could be dirty with carburetor cleaner. I tightened all the jets, put everything in place, and cleaned basically everything outside and in.

I replaced the hose that goes from the air filter to the carburetor, because it had a large tear in it. I hooked up all the hoses with all the clips and everything. I also had pulled off the petcock, and cleaned the fuel part of it with carburetor cleaner.

I also checked the fuel filter to see if fuel flowed clearly, and it did. I know for sure that fuel gets into the carb because I tried to turn it over without hooking up the fuel drain-out line (the one on the bottom of the carb), and fuel got everywhere.

The oil has been changed and my battery is fully charged.

I started it up, and it would immediately respond when I gave it some gas. I took it out for a spin, and it worked for about a hundred yards. Then, when I came to a stop, it died on me. It took forever to turn it over again. I tried adjusting the carb to be lean and to be rich, but the same result happened each time.

Along with this, I noticed a hose coming out of the top of the main engine case, near the carb, that seemed to just be a cut air hose or something.

I haven't yet replaced the spark plug or the CDI unit, because it got to dark outside.

I have no idea what else to do. Am I adjusting it wrong? Do need something else? literally any help would be appreciated.

Thank you!

Johnathon

Okay! Update again. So, I adjusted my valves and idle and everything, and I took it for a spin, it drove really well... For the first day. Today, I took it to school and to work. It was perfect on the way to school, alright on the way to work, and it died about 5 times on the way home (downhill!)

I filled up the tank today, but now the gauge reads as only about a quarter tank. As I pulled in, I realized that it was leaking fuel! The tube that drains fuel from the carb attaches to a little thing with a screw on it, and the screw was loose and leaking fuel. Bugger.

So, I tightened it. I tried to start it, but it didn't want to start. I'm praying that the problem will be fixed.

Does anyone know where that little tube is supposed to go? Or it it correct?

Kreider here again.
here is the picture.
imgur.com/p2fNyTz
So, I tightened the screw , and it take care of the majority of the problems that I am having! awesome. But, now, I seem to be back to square one: the scooter dies when I come to a stop, after I have ridden it for awhile, or ridden it pretty fast, or ridden it up a hill. I can tell when It's about to happen, because I hear it start to... miss it's correct timing? I guess thats the term for it. It doesn't sound uniform in the engine. It'll go, and then kind of hiccup, then go strong, hiccup more, and then eventually, it will bog out, regardless of how much fuel I give it, or if I let it come to a stop.

Is there anywhere else I could be getting a fuel leak? anything else I can adjust?

thanks!
kreider

I actually already replaced it, because I knew that it would be causing a problem. I can’t get a picture because i threw the old tube away and put a new one on.

Try adjusting your carb needle height. If it has a clip, move it up or down, test ride, then adjust accordingly (if it gets worse, move the other way). If it doesn't have an adjustable clip, you can use washers to raise it, no way to lower one without a clip.

The needle is the main adjustment for anything over 1/2 throttle.