tuning my bike need help

[lets ride]

hi im new to miniriders i have built a gpx 125 with a 26mm oko flat side carby and i cant seem to tune it im trying to find factory setting but cant seem to find any where the factory settings so if anyone can help that would be great

 

[DHZ_XR8cing]

Whats it doing wrong when you try to tune it? What jets have you got in it now??

 

[lets ride]

it has the ones it cum wiith it ran sweet when i was running it in then i put it back into the shop then it never ran the same it cough and splutters then as further tunning on ffull throttle it does it again or the reves dont stay constant it reves good then drops off after a short ride or picks up

 

[SwapperMX]

What are you adjusting when you say you are tuning it??

 

[DHZ_XR8cing]

First step is to pull the bottom bowl off the carbie and see what jets its running and see where the needle clip position is. Make sure no jets are blocked.
Have you put a new spark plug in it?
Is is fresh fuel?
Have the valves been checked for adjustment?

 

[lets ride]

yes and yes valves redone and fuel new i couldnt get bottom of carbie off as on of the screws were rounded offf gotta love that and clip was in middle so ii was told to put it down one so ill try that tomorra see how well i can tune that when i was running iit init was awsum it smashed my 140 but cant get that tune back to how it was am looking at putting 150 head and piston on it we tried before but piston was 1mm to biig so found sone to machine and build it but still looking for that right tune

 

[sean01]

if its got the factory jets in it they will be a little big.. (100 main is too big)

96 main jet and possibly a 34 pilot.. needle will need to be moved bit by bit till its right..