A lot of moisture in valve cover vent tube By twowheeler (Read 418 times)

[twowheeler]

I opened the airbox today and saw a film inside. It was watery and oily. So I checked the clear vent tube and it had an inch or so of liquid so i drained it. Wasnt all oil but seemed like a mix of oil and water. it was very thin. Is this normal?

Also i thought the whole idea about these catch systems was to separate the oil so the oil collects in the tube and the vapor goes back into the carb intake tube so why does mine have liquid in both?

My setup has a tube from the valve cover to the cylinder. Theres a tube from the cylinder to the intake and another off the bottom to the drain.

[FrankenMech]

Cylinder blowby is combustion byproducts which will be water, hydrocarbons, CO, CO2, etc. The water condenses in the tubing and mixes with the other products. Short trips will increase the condensation. Let the liquid drain out.

[twowheeler]

If i look at mine logically, it must be on in the wrong direction? In the pic it is installed oriented in this position on this angle. It appears that the oil is draining into the airbox and the vapor is venting to the oil catch tube. The 2 ends are pointing up while the single tube going to the airbox is pointing downward. Shouldnt it be the other way around so the oil can actually drain down into the catch tube? Or can i just reverse the 2 hoses and have the one on top going to the airbox and the lower on going to the drain tube??

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[FrankenMech]

I don't know about that one. Someone else may know something about how that part is supposed to work. Your interpretation seems logical.

My airbox IS my catch can. The vent tube goes directly from the valve cover to the airbox and there is a drain in the bottom of the airbox. Maybe it is supposed to keep the filter oiled and damp.

[Deleted]

it seems that you could reverse the airbox and catch or drain tube connections. i dont know what it would hurt.

[Alleyoop]

Mount the canister so that the the single connector on top going to the AIR BOX is pointing up. That is just supposed to get air into the canister. The TWO connectors just point DOWN.
Alleyoop