MIKUNI 25mm CARBIE MANUAL.

[Pittin]

ahhh stupid bike, have to take allll the fairing off to get the lid off :@

[Cactus Jack]

The symptoms you describe seem to be a common problem with the Mikunis - the bog is caused by a hesitation in the fuel delivery due to a sudden vacuum drop when the throttle is applied ! Hoss2k4 from Arizona had the same problem on his 2005 Pitster and it still persisted even after he received a new replacement Mikuni carb from Pitster ! He tried EVERYTHING for months , then tried a Keihin carb off his CRF88 and the problem was solved ! The bike (125 GPX Jialing engine) became super responsive and crisp and clean revving from idle to peak revs - just like a Honda ! He said it chucked wheel stands into 3rd gear instead of bogging like it did with the Mikuni . The pitbike Mikunis are just a bad design for 4 strokes whereas Keihins are well sorted and engineered to suit them .

[Quick-Prox]

thats a really good page now i no when my bikes running lean or rich. thanks heaps for that.. cheers your mate PJ

[skintag9]

Does anyone know any good motorcycle mechanics around melbourne that could tune my bike properly (Atomik moto x)? I had to replace the throttle cable and I have not been able to get my bike to run correctly since. I played with the mixture screw (thinking it was an idle screw) which has compounded problems...

[SIKSPAC]

does anyone know whats wrong with my mates bike????
It runs all good but then the bowl will fill up and keep filling causing him to lose alot of fuel????
Its got us stumped whats wrong with it ay....
Oh its on a AGB-29......

[Quick-Prox]

is teh bottom scew tighten up?

[SIKSPAC]

yeah mate the screw is all the way in ay...

[deon.jacob]

i got a question and yes i have done some research but no luck. My 125cc ducar motor will run for 45min to 1 hour and then lose power. It will idle fine but will not take any load or Rev (and no the choke is not on). Have read many threads on this issue and have come to the conclusion that my carbi may be blocked and need a clean. My Question is, how easy is it to clean and what do you do exactly, ive have never cleaned a carbi before and would be great if some could list what i clean it with, tools required and step by step process.

Any help would be great!!!!

[deon.jacob]

Any body tried these carbis and know if they are any good?


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[unit_mx]

Im experiencing severe problems with my minkuni ,she idles unbelievably high even without a idle screw with vibrated out and with absolutley no pull from the throttle cable,Then when i rev it in both choke positions the thing just cut outs on the slightest of revs.Can any one help me with this shithouse problem or am i better of just buying a kehin carby? cheers