problem with my gy6 carb By hebert12 (Read 11,434 times)

[hebert12]

hello
im hebert from chile
and i have a problem with mi ATV chinesse motor gy6
I cleaned the carbureto, that did not start.
comes fuel hose that connects to the cranckcase and the float bowl drain line
i have the float bowl drain screw close, i open and fuel loose.

when the loose and it works fine but when I reconnect anddd stop and when the fuel comes loose
that can be bad??
accelerated stops and never restarts.


sorry for my bad english

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[raford3]

It looks like the Float Bowl drain line is connected where the fuel line needs to go, if I'm seeing it right. Float bow drain is by the screw on the bottom of the carburator.

[ce]

La mangera crankcase debe ser connectada con el airbox.

Si se abre la fuel drain y corre bien el motor, pueda que el float valvula esta apretada en mala posicion, y se deja corriendo el gas hasta que se enfloje(?) el motor.

Al mejor, explicame lo que esta pasando de una vez en Espanol por que no estoy seguro que pasa.

[Bashan]

Well hello Hebert, glad to have you on Scooter Doc forum. Yes we have a bit of a language barrier but this won't be the first time. I'll just put a few things out there and hopefully I'll touch on what your problem is. First of all, this is your crankcase breather:

It usually runs up to a connection on the airbox or sometimes is just tied off on a frame member with a filter on it. I hope I'm wrong on what I think you might be saying but the crankcase breather should NOT be connected to the carb drain hose in any way. If you did have them somehow connected drain all of your oil and replace with new. Do NOT connect the crankcase breather and the carb drain together!

Now, there's a drain hose that comes off of the carb float bowl, I think we're in agreement on that. Sometimes there's a screw on the carb that you must turn to let the gas out as you see on the left carb:

Sometimes there is no drain screw on the carb and it is at the bottom of the drain hose:

These must be closed or the gas will drain out of the float bowl and your engine will stop. So make sure your drain line is not plugged into the crankcase breather and make sure that the drain line is not losing gas by checking the screws. If this is not your problem let us know. Rich

[Bashan]

Nov 9, 2011 10:04:06 GMT -6 raford3 said:

It looks like the Float Bowl drain line is connected where the fuel line needs to go, if I'm seeing it right. Float bow drain is by the screw on the bottom of the carburator.

Yep, on looking at that, you might be right. Here's the outlet and inlet:

Thanks for the translation ce! Rich

[hebert12]

Nov 9, 2011 10:04:39 GMT -6 ce said:

La mangera crankcase debe ser connectada con el airbox.

Si se abre la fuel drain y corre bien el motor, pueda que el float valvula esta apretada en mala posicion, y se deja corriendo el gas hasta que se enfloje(?) el motor.

Al mejor, explicame lo que esta pasando de una vez en Espanol por que no estoy seguro que pasa.

en español es mejor para mi...

lo que ocurre mi moto no parte, cuando saco el filtro de aire y coloco mi mano en la entrada del aire quiere partir y lo hace pero al acelerar se apaga.

lo que explique en ingles es que ayer logre hacerla andar pero primero salia combustible (gas) por la manquera de rebalse (la que se encuentra sin conectar a nada y esta en la parte superior)
logre que dejara de salir combustible cerrando el tornillo que se encuentra en la parte baja del carburador (float bowl drain screw )
pero luego de esto la manguera (float bowl drain line)
que va conectada con la manguera (cranckcase) se sale de la union ya que el aire que ingresa a la manguera no tiene por donde pasar, si abro el tornillo de float bowl pierde combustible por la linea de float bowl line
ayer deje que funcionara con la manguera de crankcase desconectada y andaba bien pero al acelerar se detuvo y no pude hacer que andubiera mas hoy probe y nada no anda
que puedo tener malo?
gracias por sus repuestas

[hebert12]

Nov 9, 2011 10:26:15 GMT -6 Bashan said:

Well hello Hebert, glad to have you on Scooter Doc forum. Yes we have a bit of a language barrier but this won't be the first time. I'll just put a few things out there and hopefully I'll touch on what your problem is. First of all, this is your crankcase breather:

It usually runs up to a connection on the airbox or sometimes is just tied off on a frame member with a filter on it. I hope I'm wrong on what I think you might be saying but the crankcase breather should NOT be connected to the carb drain hose in any way. If you did have them somehow connected drain all of your oil and replace with new. Do NOT connect the crankcase breather and the carb drain together!

Now, there's a drain hose that comes off of the carb float bowl, I think we're in agreement on that. Sometimes there's a screw on the carb that you must turn to let the gas out as you see on the left carb:

Sometimes there is no drain screw on the carb and it is at the bottom of the drain hose:

These must be closed or the gas will drain out of the float bowl and your engine will stop. So make sure your drain line is not plugged into the crankcase breather and make sure that the drain line is not losing gas by checking the screws. If this is not your problem let us know. Rich

which connect the tube
drain carb?
that was connected to the crankcase breather
my bike does not start

[hebert12]

are connected

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[hebert12]

thats right??

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[raford3]

Hebert, your vacuum line from the intake manifold needs to connect to the crankcase vent and the petcock valve. The line with the fuel filter needs to connect to the left side/ middle of the carburetor. The drain needs to be connected to the bottom of the float bowl and can just hang loose on the other end.

[ce]

No se connecta la manguera fuel drain a nada, no mas la deja colgando. Solamente sirve cuando se esta vasiando el fuel bowl.

Pero la crank case breather se connecta al air box (filtro). Que no hay un lugar sin tubo alli? Si esta abierto alguna connection por el vac line, chupa mucho aire, y no corre el motor, no mas chupa aire.

En el techo del carb hay un diaphramo de gommo, si esta torzido o ojerado no se levanta cuando se avanzamas resio.

I reiterated what raford said to just let the drain hose hang, and asked if there isn't a spot on the airbox to put the vent hose, and a loose vac line will suck too much air to run the engine

And to check the rubber diaphragm in the top of the carb for tears or leaks.

Sorry for my Spanish and English

[Bashan]

Nov 9, 2011 13:32:31 GMT -6 ce said:

Sorry for my Spanish and English

No man, you're doing great....thanks a million! Rich

[Bashan]

In this picture things seem to be correct:

• The crankcase breather is hanging open which is OK
  
• The bowl drain is hanging which is OK
  
• The vac line runs to the fuel pump which is OK
  
• The fuel line from the pump hooks to the carb inlet which is OK

Now where does the vac line to the carb hook on? If it's the air-cut valve on the right side of the carb it's OK:

Rich

[hebert12]

Nov 9, 2011 13:32:31 GMT -6 ce said:

No se connecta la manguera fuel drain a nada, no mas la deja colgando. Solamente sirve cuando se esta vasiando el fuel bowl.

Pero la crank case breather se connecta al air box (filtro). Que no hay un lugar sin tubo alli? Si esta abierto alguna connection por el vac line, chupa mucho aire, y no corre el motor, no mas chupa aire.

En el techo del carb hay un diaphramo de gommo, si esta torzido o ojerado no se levanta cuando se avanzamas resio.

I reiterated what raford said to just let the drain hose hang, and asked if there isn't a spot on the airbox to put the vent hose, and a loose vac line will suck too much air to run the engine

And to check the rubber diaphragm in the top of the carb for tears or leaks.

Sorry for my Spanish and English

do not ask for forgiveness and thank you very much for your help

no man no hay ningun tubo sin coneccion pero hay una manguera en la parte trasera
no se donde va la crankcase breather...

[sprocket]

Its a petcock.. not a fuel pump.. it looks to me like a gravity feed...

Es un grifo .. no es una bomba de combustible .. A mi me parece como una alimentación por gravedad ...

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