honda cbr 125 2007 idles but will not rev

[jpsl]

hi all im hoping some one can help i have a cbr 125 2007 now it will start perfect and idle but as soon as you touch the throttle it just sputters and dies,
ive cleaned the carb checked all the pipes for blockages etc
fuel pump pushes fuel through when turning ignition on,
new plug sparks really well checked the reg with multi all is fine
so what on earth is causing this to die any ideas please?

[Evil Hans]

Had you changed anything before it stopped working?

Some easy things to try:

Air leak somewhere - check the rubbers around the airbox and carb

Blocked fuel tank vent - try running with the filler cap open.
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Triumph Sprint ST 1050. And it's Red.

[jpsl]

thanks for reply i just tried the petrol cap off but no difference checked for vacuum leaks = none, even if i open the air box and cover it with my hand it makes no difference just stalls, so im buying a used throttle body with injector and the 2 black boxes on the side as my black boxes are seized on and one of the bolts i managed to get out is really rusty so im hoping one of the black boxes is the issue, will update in couple days when it comes through,

[arry]

Did it work fine before you fiddled with it? Genuine question - because it does sound carb set up related

[jpsl]

no every thing is standard and not been played with, it just started happening out of the blue :o( it has less then 10k miles on it if it helps ;o)

[CBRMAN94]

Something isn't right here.

Carb model CBR125s don't have a fuel pump, it's gravity fed with a vacuum tap. The newer Injection models have pumps but obviously not carbed

Which model do you have?
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Honda CBR-RW6 (Sold) - Kawasaki GPZ500s (Sold) - Honda CG125 (Project) - Honda CB750 Cafe racer (Project) - Yamaha FZR400RR

[Rogerborg]

From threads passim.

[jpsl]

its a 2008 cbr with jc50 throttle body, any way changed the throttle body but now it starts but at like 7000rpms any ideas lol as im not sure how to adjust any thing on this model

[jpsl]

never mind my throttle cable holder was a different on the new throttle body, changed it over with my old one and fits perfect and now starts normally and seems to be running perfect, fingers crossed it has solved my issue, thanks people and keep up your good work ;o)