vacuum cap 1997 mountaineer?

[rblancrt]

Hi,

I had a backfire on startup and now have a vacuum leak. I know because this happened to me once before. I would rather not pay to have it fixed this time if I can fix it myself.

I have read on the web about vacuum trees and that on startup a backfire can blow out one of these little rubber vacuum caps. I have seen the vacuum caps at O'Reillys, but I don't know where they go.

Is there a vacuum tree on the 97 Mountaineer, but if so where is it? I have tried to find it but no luck.

Any help would be appreciated greatly.

Thanks,

rblancrt

 

[rblancrt]

Found where the vacuum cap was missing from, problem solved.

rblancrt

 

[BrooklynBay]

Welcome to this forum! That was pretty fast.

 

[rblancrt]

I am now very curious as to why this connection is there in the first place. I'm not a car guy so will try my best to explain where it is.

On second thought I don't think I can. It comes down from underneath the engine, to the left of the master cylinder and underneath. It seems to be a metal tube, comes down and then elbows towards the front of the truck.

As far as I know there is nothing that connects to it and it is now capped with a vacumm cap.

If anything I said makes sense to you do you know what this connections if for, why it's there in the first place?

Thanks,
rblancrt

 

[BrooklynBay]

If it would be an older model, then it would have a vacuum modulator with a metal pipe going to a rubber vacuum hose. Your 97 doesn't have a modulator.