New gizmo on 2010 GZ.

[alantf]

Originally Posted by music man

The GZ already has crankcase ventilation, straight into the air breather case, so now it has two different crankcase vents?

The one on my bike goes to a T-piece, then to the petcock suction system. The other end goes via a steel pipe to a point at the front, below the cooling fins. Never have been able to work out what EXACTLY it did. Even posted the question on this site, but no one was able to come up with a definitive answer.

[Easy Rider]

Originally Posted by alantf

Does it look like this? If so it's the crankcase ventilation. Nothing to do with emission control.

Crankcase fumes are just a different kind of emission !!
PCV is a form or emission control.......just not the kind that usually comes to mind first.

The old method of just routing the crankcase vent hose to the air cleaner was "cheap and dirty" and didn't really work that good. If you add a little pressure (or suction) at the right point, the system becomes much better at capturing the fumes.....and less likely to plug up your paper air filter.

[Water Warrior 2]

Oh ya, that little item. We went through this before with no clear definition although a breather control seems likely. Could be something Suzuki put on to keep idle minds from stagnating.

[bonehead]

I'd like to see what and where it is hooked up to.

[prestondrnek]

just by looking at the picture its a Air Injection Valve helps emissions by injecting air into the exhaust near the exhaust valve, helps burn the unburnt fuel in the header, doesnt hurt or help the performance.

[Water Warrior 2]

Originally Posted by prestondrnek

just by looking at the picture its a Air Injection Valve helps emissions by injecting air into the exhaust near the exhaust valve, helps burn the unburnt fuel in the header, doesnt hurt or help the performance.

Kinda doubt that. Then the bike would need some sort of injection pump.

[alantf]

Originally Posted by prestondrnek

just by looking at the picture its a Air Injection Valve helps emissions by injecting air into the exhaust near the exhaust valve, helps burn the unburnt fuel in the header, doesnt hurt or help the performance.

No. Like I said earlier, it's something to do with crank case ventilation. One side goes to the front of the crank case via a rubber tube, then a metal pipe. The other end goes to the petcock via a T-piece to the suction.

[prestondrnek]

well this system is on alot of new bikes that are still carbureted, vacuum from the carb is used to power that "mistery" device you guys are speaking of, it gulps in tiny bits of air and injects it into the head near the exhaust port.

[prestondrnek]

where does the hose lead to? one probably comes from the airbox, a tiny vacuum line from the carb, and an output hose to a metal tube located on top of the head.

[Water Warrior 2]

Originally Posted by prestondrnek

well this system is on alot of new bikes that are still carbureted, vacuum from the carb is used to power that "mistery" device you guys are speaking of, it gulps in tiny bits of air and injects it into the head near the exhaust port.

Are you thinking of an Exhaust Gas Recirculation valve ?? High vacuum at idle would hold the valve closed and it would open up with less vacuum and more RPM to help burn off unburnt gases from the cylinder. This was a bandage solution on 70's cars and most folks pulled the vacuum line off and plugged it with a golf T.