Streetfight 2 100cc carb problem

[Beng]

Hi guys, we have just bought this bike only 3 weeks ago and unfortunately it keeps breaking down. I have removed the fuel vacuum valve from the tank and proved the fuel flow by sucking on the pipe from the carb, I also have checked out the filter on the valve which was found to be in good order. I have also removed the carb which has been cleaned in petroleum and taken out the jets which I have cleaned with carb cleaner. This seems to cure the problem for a day or so but then it will break down again, on this happening the first thing I go for is the drain screw on the carb and the fuel is present, is there a intermittent fault with the fuel valve or the auto choke?

[RhynoCZ]

Street Fighter II huh? Have you tried to use Hadouken?

Anyway, I'd say the problem is in the fuel. Water and/or dirt in petrol could cause what you've described. A electrical problem could also be the culprit. We're gonna need a bit more info on ''it keeps breaking down''.

It's a 2-stroke, right? Are you sure you have oil in the petrol in the right ratio?
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Beng]

[RhynoCZ]

Are you sure the auxiliary oil pump is working and that the oil is getting to the crank? It could as well be partially seized. I don't quite understand the expression ''breaking down''.

It could also be electrical, sometimes people ruin their battery terminals, which ends up with bad conection whenever they hit a bump on the road, resulting in ''breaking down''.

You say you have petrol in the carburetor, so I assume the tank breather is doing is job just fine.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor