MOPED ARMY

99.9999% sure it's not the gas cap, where exactly would I have to look for that air leak? It's not that high mileage it's only done about 7300 miles, or 11800 km

Given how many times the carbie has come off I immediately suspect the first. If that's the culprit, how would I got about fixing it?

There is a nylon ring between the carb and intake, could be that. I'll check and report back, I'm guessing local shops will stock new ones.

I will, but I assume local shops should have plenty of parts like these. They usually do, I got a new throttle handle and air filter there as well.

It's a 2008 model so theoretically it shouldn't be too bad but if the nylon ring doesn't fix it I'll make sure. It feels a little down on torque, could that be a sign of bad reeds?

WRONGO.

he's got an a35 quaddro, a euro bike. they stuck with the SHA and a35 cylinder setup for a while.

Not tuned correctly! You got to learn how to tune .

If I had a bike for a part of a afternoon It would rip !

Tuning is not as hard as it seems!

It's supposed to be an A35 but the engine does say A5 and A55 in a number of places, the carbie is if I'm not mistaken a Dell'orto SHA 14/9.

It ran fine on this tune a while ago so I doubt that's the issue.

I tried it without the cap and it made no difference. And yeah it starts cold first kick so that makes it sound like it isn't the reeds. The intake isn't suuuper long but it definitely isn't short either. Probably 5 or 6 inches or so. The carbie on these is next to the frame instead of below it, makes it a breeze to work on if nothing else :p I'll give it the brake cleaner test tomorrow but when I think about it I'm almost certain it's that nylon ring. The two halves of the "clamping" part of the carburetor are touching, and I can still "twist" it on the intake by hand. It won't come off or anything but I did have some concerns that it wasn't clamping down hard enough. (edited)

I checked and you're right about the carb. Mine don't have the oil injector thing though, that was an option I believe. I already run 50:1 premix. By the restrictive airbox block hole do you mean opening up the (for lack of a better term) d-shaped intake? I know it ran great on this jet before so I'll wait with upjetting until I have it back to running how I know it's supposed (and able) to. (edited)

No if it was injected they block the hole in the intake with a screw or bolt it maybe loose or missing. The airbox ditch and use a highflow filter or metal disk.

But seriously the gas cap vent check it cause the main symptom is holding in 1rst gear and not shifting due to low rpms cause of lack of fuel.

It could be a passage in the banjo to floatbowl float pin or the vertical tube or even the holes in that tube. It could be the internal petcock filters length of fueline inline filters and diameter of fuelline. It sounds as tho it is fuel staves on take off restriction in fuel flow go from there be warned carb problems are often electrical gremlins and vice versa.

I have never been able to tune a sha without some sort of airbox on it. It has to have some kind of direct flow or restriction on it or they just dont ever seem to want to function thru the throttle range.

Yeah I was hesitant about modding stuff cause I know it runs fine in stock form and I'm not looking for extra performance. I'm much like the customer you mention, though my commute is shorter. I also don't have oil injection (didn't come with it), though if nothing else I'd have been forced to get rid of it with the mods I have planned so maybe it's a good thing cause it means I can keep it mechanically stock. It's not idle, I actually raised it a few whole turns in an attempt to compensate but it didn't really help.

I did check, I promise it's not the gas cap vent :p I have some suspicion of the fuel itself rather than the amount thereof but I can't fully rule that out just yet. I'll let you all know. Some gas stations here offer ready-made 50:1 premix. The benefits are that you don't have to mix yourself but more importantly to me a lack of ethanol. The biggest downside is that it doesn't quite get as much use as the others (most moped tanks are only around 1 or maybe 2 gallons after all) so the fuel in there can be pretty old in some cases. Thankfully they made sure the oil doesn't settle and mess up your mixture. (edited)

Ja die mijd ik als de pest, degene die ik gebruik wordt niet met de hand gevuld

I'll see if I can find it. I did clean the banjo and petcock, so don't worry about those.