What is this thing? By learae (Read 2,928 times)

[learae]

Here's some more pictures for your viewing pleasure.







I don't see any metal check valve like yours, but it could be the first plastic part on the hose, and there is nothing attached to the valve cover like you have in the pictures. That metal hose runs off the engine, straight into this part I took off. The other end goes who-knows-where.

[Alleyoop]

It is the same thing the Valve is down the line on that one but they are the same. I can see the valve is not built into the valve cover but just the pipe coming off of it.
Follow the pipe and along side the motor and you will see the valve and a Vacuum line going to it.
I think I have a shot of one with that configuration.
Alleyoop

[Alleyoop]

I found this one which looks like what you have. At the end of the PIPE it has a rubber hose to connect to the Valve.
Alleyoop



Going into something like this or a canister:

[learae]

ok well problem: solved.

[learae]

And the inside is smooth, the outside is chewed up from clamping. Gosh I need to get myself a shop.

[Alleyoop]

Good job, as long as it blocks the hole who cares what the outside looks like. Make sure the Vacuum line that was used to activate it is plugged up by its ORIGIN.
Alleyoop

[learae]

Thanks for the help I got the valves set (they were way too big) and once I get the carb back in I am going to try to fire it up!

[Alleyoop]

Sounds like a plan, hope it comes to life and purrs like a kitten, if not we can then adjust the carb.
Alleyoop

[justbuggin]

wow i did not mean to start a ruckus just that it was part of a smog system which all of the above system fall under and that it can be removed and that the holes that it was attach to needed to be plug off

[Alleyoop]

No ruckus Justbuggin, all is well.
Alleyoop

[drifter]

i APOLOGIZE FOR DISRUPTING THE FLOW OF THOUGHT HERE, I THOUGHT THE GOOD FELLAS QUESTION WAS ANSWERED

I had thIS sort of EPA deal, it is serious stuff to control as a fire can come from not shutting it down right.

by far the best is the NCY custom shut off GASKET.

On mine i removed everthing but the metal tube coming off the head, I took the rubber tube coming off that and bent it over and zip tied around it and the metal tube about 4 times.

WHAT MANY FOLKS MISS REMOVING THIS THIS -

on some systems, that device also bleeds back to the air filter, if you remove it, it leaves a hole past the filter that allows dust right down your carb air intake, you can get a big screw and cover it with epoxy, and screw it into the hole in the factory air filter.

after doing all this RIGHT, adjust valves and AF screw, cause you have changed much about air and exhaust currents


BE VERY CAREFUL, THEIR IS AT LEAST ONE CASE OF A BIKE THAT CAUGHT ON FIRE FROM THIS THING BEING MODED WRONG, WHAT EVER YOU DO, TAKE PICS AND GET 2ND SET OF EYES HERE TO HELP.

cheap white metal sheet will erode slowly, pick a engineered metal

[Bashan]

Mar 31, 2013 10:49:55 GMT -6 learae said:

I see the one line running to the check valve and up to the gas tank in your picture, but where do the other two lines go?

The idea is that the vacuum from the airbox draws vapor off of the gas tank when the vac valve opens. The problem is the check valve lets gas through if the bike tips over, or sometimes the canister gets plugged. When this happens you lose your tank vent and the bike stalls.