I am having some small problems with the 6.8 in my F53 MH chassis. It runs like a top, but has a little idle lope. To those who looked at my previous thread, its better. But while checking for vacuum leaks I found this:






I thought it would be something that moved. But what's there and bolted down is actually the rear of the intake manifold. What's supposed to be here?

 

Subscribing... no clue.

 

I have a 1999 class a motorhome same v 10 . Mine is same as second picture

 

Looks like the one in this thread...
https://www.ford-trucks.com/forums/1...l#post14152934

I learned a little bit later on another thread that it was normal for some V10s as would be suggested by the response from Bumble Guy. I'm still curious why they would do it like this, but that seemed to be the answer.

 

I know it doesn't look right with the metal hose and the gasket not lined up but it is the same on my v 10 so I wouldn't worry

 

It's gotta be for EGR or vacuum something.
Where does the hose go?
And where does the other side go?

 

this reminds me of my aircraft inspection days. mechanic's would do a great job on the bolts that they thought I could see and a crappy job on the bolts they thought I could not see.....but I used an inspection mirror and can see all the bolts.

so my take, this is a short cut on the assembly line and mechanics are putting in one bolt thinking the inspector cant see the other. later during service life of the vehicle...the two parts shift out of position and you have them hanging on out of alignment by one bolt.

the difficulty in trying to determine if it is a case vent is that multi cylinder engines equalize their case pressure as pistons move in and out resulting in no real sense of case vacume or pressure if you put your finger in the whole.

 

weird... mine has it too. It is a passage to nowhere; i shined a flashlight up from the bottom and the light comes through the top.

 

That's a hole to nowhere. The Heads are interchangeable left to right, when installed on the left side that's at the front, coolant passage to the intake manifold for the t-stat. On the right it's there at the back, it's completely normal.