Cg125 Euro2 carb on Non Euro2. Missing problem

[civic_90]

I recently rebuilt my CG 125 millenium edition 2000 model. It has a chinese carburetor. I got a brand new euro2 carburetor from honda dealership.
Its not setting up properly. There is a slight missing.
So I am looking for any experienced 125 carburetor expert ustaad who can help me out. Location is Karachi.

[Hassan1991]

What kind of missing?

[civic_90]

Slight missing while accelerating. Specially when riding in 4th gear and then you leave the accelerator and then again accelerate. At the point the engine does missing and gets on. And the mixture is also not adjusting properly. I have tried all sort of adjustments. The engine is not standing on idle in slow rpm. All kind of settings have been checked.

[Hassan1991]

This missing is also due to mixture.
Check air leakage. If tabbets become tight they also cause such problems.

[civic_90]

as i mentioned earlier, everything is perfect.no tappet issue. no mixture issue. no air leakage issue

[user-xxx]

i had that with brand new cg, it went away after 3000K.

dont know how but i cleaned carb and euro system.

also check the clips of coil beneath tank

[civic_90]

the wiring harness is brand new from atlas honda. so the clips are fine as well.

mechanic just installed its previous chinese carburetor and now its fine. but not as free as it was on the new genuine carburetor

[civic_90]

just a question, can that Euro 2 system be installed in old models just as mine?

the following item will be installed as far as I know,

Euro 2 Tappet Cover with Air Breathing hole.
Euro 2 Diaphragm
Vacuum Pipes to connect Diaphragm to tappet cover and the carburetor

[Hassan1991]

yes it can be. but why you want to install it?

[civic_90]

Body wise the bike is complete like a New 2017 or 2018 model.

Fuel Tank and Side Covers are of original 2000 Model.

bigger Front Drum
round tail light

the only these EURO 2 accessories are missing, so completely wanted to give it a look of Euro 2.

and I guess it will give a slight difference in Sound.

[Hassan1991]

Euro2 is emission standard. the problem your having is due to wrong mixture or carb is not right.

[civic_90]

yeah i know that. the problem is some how resolved by installing its old Chinese carburetor. all missing gone and spectacular mileage.

[Hassan1991]

try installing any other euro2 bike carb.

[hassantahir2]

The only difference i found in CG-125 Chinese carb and orignal non-euro carb was of main jet...
I can't recall the jet numbers as i did that about 2 year's back... But just swapping the main jet would work..

[civic_90]

[civic_90]

Above are the latest pictures.

following is when i rebuilt it.

time

i bought the brand new euro 2 carburetor for 3500 from Rizwan Autos Water Pump. cant spend more on just carburetor. it was fine when installed first time. the setting was disturbed when 1st time the mixture was tempered.

[civic_90]

[mukhtar.humayun]

Same issue in my cg125 2007 but after install new carburetor it solve

[mukhtar.humayun]

Change the carburator