Post by jabulon on Apr 14, 2013 12:19:28 GMT -5
Hay Guys !
I'm having a really bad couple of days !
I have a new Taotao50 chinese scooter with a 139qmb engine. I've rode it abut 100km so far. During the first 50 I haven't sped above 25km/h. It was working perfectly, until two days ago, when I started it as usual, drove for 300 ft until a stop sign, and it died, and refused to start. I walked it back home, and have noticed that there is fuel leaking from the air filter.
When I do try to start it, I hear the starter work. The manual starter doesn't do anything.
The overflow tube at the top part of the carburetor is dripping fuel out. I figured that the carb is completely soaked, so I let it sit for a few hours. The leakage from the air filter stopped after it spilled about 1/3 of the tank. (the tank was about 7/8 full). The engine started, but had bogged and died after a few seconds. Again, there was fuel running from the air filter and the overflow tube of the carb. At first I've suspected that the idle was too low, so I've adjusted the idle using the small screw. I was able to keep the engine running for a minute on the main stand, giving some gas when it felt like it was about to die. But, after a while it died and did not start again. I believe that giving it a few more hours to drain the carb will allow me to start it again, but it will not last without giving constant gas.
I've started reading and researching online and had found that two possible causes are to blame:
-there is a problem withing the carburetor which does not shut the fuel flow.
-there is a problem with the petcock. Mine has three hoses attached: one from the tank, another to the carb and the third to the manifold.
Now, for the question: how can I check which one is faulty ?
I examined the carburetor, and the bottom part is non disassemblable. I did remove the top part of the carb, inspected the the diaphragm and the needle; both looked brand new and fine.
Thank you in advance for any help !!
I'm having a really bad couple of days !
I have a new Taotao50 chinese scooter with a 139qmb engine. I've rode it abut 100km so far. During the first 50 I haven't sped above 25km/h. It was working perfectly, until two days ago, when I started it as usual, drove for 300 ft until a stop sign, and it died, and refused to start. I walked it back home, and have noticed that there is fuel leaking from the air filter.
When I do try to start it, I hear the starter work. The manual starter doesn't do anything.
The overflow tube at the top part of the carburetor is dripping fuel out. I figured that the carb is completely soaked, so I let it sit for a few hours. The leakage from the air filter stopped after it spilled about 1/3 of the tank. (the tank was about 7/8 full). The engine started, but had bogged and died after a few seconds. Again, there was fuel running from the air filter and the overflow tube of the carb. At first I've suspected that the idle was too low, so I've adjusted the idle using the small screw. I was able to keep the engine running for a minute on the main stand, giving some gas when it felt like it was about to die. But, after a while it died and did not start again. I believe that giving it a few more hours to drain the carb will allow me to start it again, but it will not last without giving constant gas.
I've started reading and researching online and had found that two possible causes are to blame:
-there is a problem withing the carburetor which does not shut the fuel flow.
-there is a problem with the petcock. Mine has three hoses attached: one from the tank, another to the carb and the third to the manifold.
Now, for the question: how can I check which one is faulty ?
I examined the carburetor, and the bottom part is non disassemblable. I did remove the top part of the carb, inspected the the diaphragm and the needle; both looked brand new and fine.
Thank you in advance for any help !!
..BAD TO THE BONE..
