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Hello, On bs34 mikuni, pilot screw is'it a air screw or a fuel screw? When I screw what is what I decrease the air in the mixture?

hello, the rims are 18" size. the source of the problem is found for some time ... finally there is not enough air has a certain speed. it might not seem surprising without the air box, but it's real. I think this is due to the turbulence has some speed. I remove the bmc pod and put...

tks, what do you mean with "if it is not plugged"?

hello, for mikuni bs34 (xs400se) , the pilot screw is it air or fuel screw? what do I put if I unscrew, air or fuel? tks

I found the problem! I do not have enough air coming despites my pod filters! when I take them off there isn't a big difference except I havn't this problem to 110km / h, I ride without a problem (I tried 140)! I do not think too rich yet, maybe it is a problem of turbulent air behind the...

I did a few tests. I put tape around my filter but no real change! The only change is that when I arrive in the limit zone (110/120 km/h) I have no small saccade like before but is completely linear (as restrained). I find it really strange that the tape does not change more!!! :umm...

Yesterday I tried without petcock, just directly with a pipe, and same problem. :banghead:

tks bcware, I don't believe because i 've changed them and now my ignition advance is good (verified with the strobe lamp) and the full advance is about 3000 rpm. And my problem is not always at the same rpm in what gear the bike is :banghead:

how adjust the float needles? for me it's strange the rpm problem change on load and i think only a problem of fuel may correspond to the symptom load. don't you think? you understand what i want to say by "load"? I just want to say: when the bike need power, not only when the bike is static

I do not have the original tank and then a different petcock. It's a 125 dtmx petcock! I feel like it flows well but actually the 125 dtmx was smaller and less powerful! I timed the flow to 1 liter: 2min10sec it looks good but can be just a little limit? can test your flow and timed...

I've changed rings and just after a friend took cylindre compression: 7 this friend said it was normal because the ring were not honed ( do you understand because I'm not sure about my english! sorry!)

110-120 km/h

I can not believe that the xs400 engine lacks power to take a gear ratio of 16/36 with a wheel 18.:( may be a slightly insufficient flow from the tap would be an explanation? I do not have the original tank and then a different petcock. It's a 125 dtmx petcock! I feel like it flows well but...

for the 4G5 model (xs400se 1981) the stock sprocket is 16 / 36 whith 16" rim.

i just understand ! :) the bike seems to go over but the tach steady and locked around 6500 un 6. The bike lose power as breaks. 120/80 -18

around 110/120 no problem the brakes are good The clutch is good it's seems not slipping. "Throwing it out there!"?? i've the stock sprocket 36/16 . normally with this model it's a 16" wheel but I replaced with a 18" wheel. The bike seems to go out this area but not

hello, my problem is still valid since i 've build my bike i can't really past 6500 /7000 rpms in 6 gear. In fact the bike go over 6000 rpm on the first gears and more i go up the gear more the area where the bike can't go over is down: i can't go over: 8000 in 4 gear / 7500 - 5 gear...

sorry, i don't understand...:(

the xs650 coil: Résistance du primaire 3.9 ohm à +/-10% à 20°c Résistance du secondaire 8 kohm à +/- 20% à 20 °c the xs400 coil: Résistance du primaire 4 ohm à +/-10% à 20°c Résistance du secondaire 9.5 kohm à +/- 20% à 20 °c

is the coils of the XS650 compatible? tks