valve cover bad??

[redneckjeeper94]

how can you tell if your valve cover is bad, i think mine may be but im not sure, i see oil build up on one side towards the middle and im gettin a lot of oil coming out of that tuube coming out of the top of the valve cover taht goes to the airbox

 

[87manche]

that's not likely the valve cover being bad.
2 possibilities.
The rear hose that goes to the intake manifold is supposed to suck air from the front hose to the back hose. When the rear hose gets all gummed up than the font hose draws more air, reversing the system and mucking up your air filter. See here:
http://www.off-road.com/jeep/cherokee/98/04_apr/valvecover/cover.html
The other posibility is that your motor is old and has worn pistons, combustion chamber blowby is causing high crankcase pressures and blowing oil through the airbox. The fix for that is rebuilding the motor.
Try the first suggestion, that's what was wrong with mine.
About the only thing that can go wrong with a valve cover is that it gets warped, and then you would have seepage down the sides of the block.