I have just acquired a '94 460; The air intake has a 90 degree fitting held in by a clip (see the pirated picture below, the elbow just before the air box). My hose is missing. I cannot figure what it is for, and the vehicle runs fine. Is it PCV? EGR? Any help will be greatly appreciated, Thanks.



Thanks.

 

Probably crankcase breather hose. If the Econoline valve covers are like the F-Series, there should be a nipple coming off the oil fill tube, just below the cap.