I have oil in my air filter and i cannot figure out why. The module thing thats attached from the crankcase to the filter housing is covered in crusty oil and dirt but i checked the hoses and they seemed clear to me.
Any help would be appreciated thank you.

 

Extremely common problem. Search button. Google. You will find your answer.

 

Well, since the thread is already started:

https://www.cherokeeforum.com/f2/oil-air-filter-11203/

Read this.

 

If your PCV valve or the baffle in the valve cover is clogged it will create blowby into the air filter housing.

 

The CCV lines, there is no PCV, need to be clear with no restrictions. They must not be cracked or broken. The grommets must be in good shap also or the system will not work properly.

 

Technically they're the same, just called different names. For newbies who don't know CCV (Crank Case Ventilation) and PCV (Positive Crankcase Ventilation).

 

Yeah, I know. I just didn't want the OP to look for a PCV. He needs to verify the integrity of his vacuum lines.

 

I agree with ya on that.

 

Could always put a catch can on

 

Replace the hoses/plastic pipes. If they get partially clogged, the system doesn't work as designed.

There's also a factory mod you can do if you feel like pulling the valve cover off.