Hello gents, so that air vent thing on the front of my 4.0 is leaking a rather large amount of oil. So much that I can see it seeping down the cover towards the oil cap. The grommet and tube were replaced back in July. So why is it leaking so bad. There's also oil that ends up in the air box. A small amount but still significant. Not the best pics I'll get some in the sum tomorrow. Thanks.

 

Does your valve cover have the flutes inside ? Check out Cruiser54's list there is a mod that could help with the oil in the air box. I think I posted pics from mine too.

 

https://www.cherokeeforum.com/g/picture/3575335, I did this when I did my gasket.

 

Idk, does a 98 have flutes? What's the mod?

 

I cannot say for certain whether or not the 98 does but your valve cover looks like mine so it might. You cut the flute shorter and drill a hole in it and it is supposed to make them less susceptible to capturing the oil which allows oil to get back to the air box.

 

http://cruiser54.com/?p=131here is the link to the mod

 

Thanks. I'll look into that.

 

My valve cover gasket leaked so bad when I had it apart I just did the mod. So far so good, good luck.

 

Mine doesn't leak at all except this stupid vent.

 

The other thing that could help is replacing the grommets in the top of the valve cover but I don't see that helping with the air cleaner box issue. Good luck with it.

 

I did in July. Is it bad again already?

 

I would seriously doubt it unless something got damaged on the install or a wrong part.

 

Finally have time to look at this. Pics from today

 

Replace the rubber grommets on the top of the valve cover. They get rock hard after a while and start leaking. You should replace the vent elbow and CCV elbow too. You might have to pull the valve cover off because those grommets are pretty difficult to get out without pieces of them falling down into the engine.

 

I replaced them less than a year ago. Is it a yearly thing?