1989 E350 Vacuum Guide

[Brooke]

Hi.
I have an 89 E350 with a 5.8 Liter engine.

I bumped a vacuum line loose and can't find its proper location.

It starts at an electrical module mounted above and behind the battery.
It then travels back to the top center of the motor. It's about 3 feet long with a rubber elbow on the end.

Since accidently removing it, my van runs roughly at idle speed and blows a lot of black smoke from the exhaust.

Thanks

[Brooke]

I've figured out that the module where the line originates is the MAP Sensor.
Does anyone know where this line should lead?
Thanks

[goon]

upper intake around the middle where the rest of the lines go.

[Brooke]

Goon,

Thank you.
I'm going to look again tomorrow.
I would assume that that is right on top of the center of the motor, right?

Thanks

[Brooke]

I still can't find the spot.
Does anyone have any more advice on what I should look for?
Should I be looking from the passenger compartment?
Any advice would be appreicated.
Thanks