150 Euro canister thing

[buckrgers]

I am an outboard tech and new to scooters. there is a hose (i thinks its a crank case vent line) comming of the clyender head. It connects to a black canaster that has a vacuum line from the intake and a hose going to the air box. Could any one tell me what the canaster is and can I remove it and run the lline directly to the air box. The air box is no longer connected to the carb. I left it for a stock apperance and for the vent lines. Thanks

Brian

[medman1952]

Not having seen your scooter, I think you are right it is a crankcase vent hose. If you took the canister off yes I think you can just plug it into the intake someplace. You ca probably just leave it open to air and it will run just fine.

[Twigster]

Brian -

I've got the same 150 Euro scoot. The cannister you're referring to is a charcoal filled cannister used for gas vapor recovery. It's part of the emissions equipment and is placed between the air intake and the gas tank. It is used to send excess gas vapors into the air intake where they can be burned instead of escaping into the air.

There is a line coming from the top/side of the gas tank which runs to the cannister. From the cannister there may be one or two other lines coming out, but one of them T's into line which runs to the air intake.

However, this design does not work very well. I had a problem with mine when I overfilled the gas tank. The excess fuel ran into the cannister which essentially caused fuel to run into the air intake and blocked air from getting into the engine. This caused the scoot not to not run at low RPM and it also caused it to act like it was flooded when being started until I disconnected the cannister & dried everything out.

The cannister serves no other purpose other than vapor recovery, and I found it very stupid that they designed it this way. So, I disconnected the line coming into the cannister from the fuel tank & just ran it direclty down & out the bottom of the scooter. I kept all the other lines attached to the cannister as is. This causes a slight change in air restriction on the engine, so I only had to adjust the idle a small bit to account for the change. The scoot runs much better now (at all times)

In addition, I now carry a small bottle with me that I sit under the scooter now when I fill up the tank. Any excess fuel is caught in the cup which I just poor back into the tank after a few miles. Better yet, no more chances of me flooding the engine by overfilling the tank.

Hope this helps,
Ken ;D

[Twigster]

Brian -

One more thing!

I'm pretty sure you should be able to remove the entire cannister from the scenario if you want. However, I was told by my dealer that the engine does need a bit of air restriction (some of it caused by the cannister) in order to run properly. If you remove the cannsiter, you may have to play with the idle & air/fuel mixture a bit on the carb in order to get things running smoothly again. In the end, I think performance will improve without the cannister in place. I just left mine attached in case I ever want to hook it back up.

-Ken

[buckrgers]

I checked there is no line from the gas tank running to it. the vent hose from the gas tank is vented to the air. The only hoses connected to the canaster is the one from the valve cover, the one going tothe air box, and a vaccum line from the intake. Thanks for your help. I will try removing it when my new intake comes in.

[Jacine]

If you need to restrict the lines you can use a golf tee in the end.