What on earth is this???

[Mosesaged3]

Hi guys, I hope you can help me with this. I have a Chinese 125 with this strange air box/filter at the front of the engine.

It has a hose tucked under the tank open to the air, this leads to abig black cylindrical tub that houses an air filter, then past the filter it goes to a metal hose and then into the engine.

There is a small hose also running down the frame and into the carb.

Does anyone know what this is? What it does?

Thanks in advance!

[Mississippi Bullfrog]

Tricky to say from the description but it sounds like some form of hydrocarbon trap. Petrol evaporations are meant to be prevented from reaching the atmosphere.

[fastbob]

Hello, at the very least you could help by telling us what bike it is and a photograph would be very helpful too . It's bound to be some wonderful device for saving the planet . If you don't like it , blank it off and chuck it away . I doubt its going to be missed by an MOT inspector.

[Mosesaged3]

Thanks for the help, sorry, couldn’t figure out how to post a pic on this (new to forum) cheers guys

[SometimesSansEngine]

Thanks for the help, sorry, couldn’t figure out how to post a pic on this (new to forum) cheers guys

 

Here you go bud

https://www.themotorbikeforum.co.uk/viewtopic.php?p=886598#p886598

When you go to post you'll see a tab underneath the box you type your message in with 'attachments' written on it. Select that, find your file and upload.

[Tiggie]

Just the make/model of bike will help

Probably some kind of breather tube or an overflow