Ford Repair: Engine oil in Trottle Body, vacuum hose, oil residue

Question
On a 96 Bronco 5.0.  What would cause engine to come up into the trottle body?  It runs and idles fine, but engine oil is coming up into the upper intake and up in the trottle body.  Never seen this happen before.  Can you help?

Answer
first it is normal for some oil residue to get in throttle bore that is why it should be cleaned periodically.

as far as to much oil getting in it-make sure pcv valve is working if not blowby will push oil in intake- so if engine is in good mechanically
dirty or clogged pcv valve-broke or leaking vacuum hose will cause it.

good luck