oil in head?

[Fouledplug]

Okay so theres a hose that comes out of the top of the cam cover. On the other side it has a plug. Whats it for? It keeps filling up with oil, I think transmission. The hose fills up so quick, that by the time my moto is over the bike is low on oil. We keep taking the plug out to drain the hose, because before that the oil was blowing out the carb and the airbox (reversed flow).

[TeamGolen]

bump. help this kid out

[mikerides33]

It's the catch tube. If it continually fills with oil you either 1. have too much oil in the case or 2.you need a new top end because your rings are not tight against the cylinder. Try only filling it 3/4 up the dipstick. Might be time for a top end. How many hrs. on it? Hone the cylinder and put some fresh rings in it. Assemble it dry and ride it hard for break-in. Search the subject. ?

[damn-yankee]

It's probably a blown seal... Crank and or balancer seal. This causes the trans oil to be sucked in to the motor side and over filling it. It will than come out in the catch tube.

If your trans oil is getting lower when this happens than it's probably the seals.

Do a search. This has been discussed a few times. It's very cheap to fix.

[mikerides33]

I should have thought of that. With that much oil it would have to be, right?

[scott456]

I think it means you are in need of new valves or a new top end because that happened to my bike. BTW you should check it and empty it every ride but normally there won't be that much in it.

[Dan CRF250]

new valves have nothing to do with it

i swear people thing valves are the solution to everything now..

its your crank seal, oils coming from your tranny into your engine, overfilling, adn is pushing it thre the breather