Strange carb issue

[lasa_dal]

 

Hi,

I bought this bandit 25o recently. With GJ74A engine. It was running like rocket when I bought it. I could reach 130 kmph on 3rd gear.

The problem was hard to start in the morning and folding plugs. I opened the carbs and clean them and did following adjustments.

Float height – 8.6mm
Pilot screw- set to 1 turn returning
Main jet-90 (same as before)
Pilot jet – 12.5 (same as before)

For these settings bike ran very poorly I couldn’t even touch 100kmph on 6th gear
So I changed the float high s following

9.6mm – better but still not good
10 .2 mm – still not good
11 mm – better but not good

After every adjustment I synchronized the carbs.

Now the float level is 11mm and way out of speck. I have following issues

1.   bike runs flat at 3000-4000 RPM and 6000-7000 rpm
2.    low  throttle response it was going like a rocket before now it runs like crap
3.   cannot touch 130 on 6th gear

Please advice me
1 did I do anything wrong
2 why the original float setting (8.06) was rich?
3 what shoud I do to make the bike run better like before?

thnks!

[lasa_dal]

is there anyone??

[tomx611]

did you check the float valve in the carbs?
if it can't shut the fuel income, it will continuous to make it high fuel level.

try to do a test for the needle valve.

http://www.gixxer.com/forums/showthread.php?t=159718&page=2

the #33 post

[lasa_dal]

did you check the float valve in the carbs?
if it can't shut the fuel income, it will continuous to make it high fuel level.

try to do a test for the needle valve.

http://www.gixxer.com/forums/showthread.php?t=159718&page=2

the #33 post

i found the issue ..

carbs are 100% OK. issue was two plaugs were broken from the inside . i replaced all 4 plugs. now bike runs same as before

FYI the float level now is 11mm

anyway thanks for replying