So im doing the jeep TB install and i just took off my throttle body and noticed a lot of oil on the inside of my intake manifold. I recently got my valve cover gasket replaced because of oil on my plugs, is it possible that this is from before my valve cover gasket replacement?

Anyway, does any one have any ideas on what could cause this?

Thanks

this is most likely blowby from worn or burned piston rings, or it could be a clogged pcv valve. Check the valve, it should rattle, if it doesnt buy a new one, next do a compresion check to see if it is the rings

i had the same problem turned out to be my valve seals, hope this helps