Hey guys. Was switching out my starter yesterday and cleaned up my throttle body and noticed the air filter and air box was soaked with oil come from the breather hose at the top of the valve cover. I had a lot the the junk caked on the throttle body. Is there any reason why it would do this. I bought used so maybe the guy never changed it. It's dripping out tho. I'm going to pick up a new PVC elbow and see if that helps. Just wondering if this could be a warning sign or something.

Thanks

 

Seems like a good place to start.

 

yup you need a new CCV/PCV front and rear. pretty simple to change out, dealer is the only place to get the parts but they are about $20 for the gasket and pastic elbow

 

I found Oreillys has them. I had the part # somewhere. It's a Dorman part #.

 

Here are the OEM parts numbers for your year...

5300 9243 (front elbow)
5300 9241 (rear elbow, with orifice)
5300 6239 (front hose)
5300 6229 (rear hose)

 

Thanks guys. I Picked up one from Oreily's. When I put it on it was really loose. So I took the rubber washer off the new one and put it on the old one. Hopefully that helps. I don't see how this will prevent the oil from seeping down. There is no bypass valve in the elbow.

 

is the smaller hose on the rear of valve cover getting vacuum

 

Usually, the front one leaks oil into the air filter because the rear one is clogged. You need to replace both of them. Sometimes, you can clean the rear one with carb cleaner, if it's not too clogged.

 

Awesome. That makes sense. I'll check it in a bit. Thanks

 

check nipple on intake for gunk also where small line connects

 

The rear elbow with the orfice that gets plugged is Dorman #47057 and the front one is 47079. I changed mine and the back one was totally plugged, made a world of difference. Oh those part #s are from oreillys site.

 

I went throught the process of replacing these tubes on my old 88 XJ and after removing the tube from the valve cover,I looked into the hole and notices a lot of built up carbon and dried oil. I also removed the valve cover and found a lot of caked oil and dirt on the top inside of the valve cover. All this baked oil helped to plug the original tubes. If your going to change the tubing, might want to also clean the valve cover to prevent the new assembly from plugging a few years later. Also seemed to help keep the oil out of the air box.