Is it getting oily all around or just in one spot? The reason I ask is because the PCV system returns to the air filter housing. If you have a lot of blowby and are getting excessive amounts of oil in it, then you will see one oily spot on the side of the filter. However, if the filter is oily on the inside, then you are getting oil thrown up through the intake. This indicats a major engine malfunction. Usually bad rings or a blown piston. But, in both cases, it is an indication of a worn engine. You can try replacing the PCV valve and see of this helps.
The MAF is located at the air cleaner you should see a wire connector leading to the air box and that's it.
It should be inside the air cleaner housing.
its hiden under the air filter you have to take alot of stuff off if its a 351 ford
It is in the right half of the engine air cleaner.
Follow the flow of air from the air cleaner to the throttle body. You will see it.
What year of Ford Ranger is this ? and I'll check to see if it's the same air filter
Air Cleaner (Element) Removal & Installation1. Disconnect the negative battery cable. 2. Remove the outlet tube clamp from around the air cleaner element housing and remove the tube from the air cleaner housing. Position the tube out of the way. 3. Remove the air cleaner element from the air cleaner housing. 4. Installation is the reverse of removal.
Driver's side, beneath the air cleaner.
inside the air cleaner housing
Air intake hose between tb and air cleaner
On top of engine covered by air cleaner
Remove your air cleaner housing, left front tire. unplug and unbolt your alternator and remove it up throw the air cleaner area.