Vacuum

[litryxoo]

Well recently i have rebuilt a 2.8. When i bought the bronco it did not have any vacuum lines at all, however the solenoids are still mounted on the side. In my rebuild i got rid of the smog pump(and with that doesn't that mean i no longer have a need for EGR stuff to?) and i don't have AC. I know certain lines have to be hooked up for the engine and carb to run right? What do i have to have hooked up, also note the pcv and oil cap are not hooked up and i have no clue where they connect in at?

any help is much appreciated

 

[Uncle Gump]

I thought I would pull my 85 EVTM out and see exactly what it had fir vacuum diagrams. It was a bit disappointing...

I don't have a bunch of experience with the 2.8L.

I know most tend to switch to duraspark ignition... and also swap to a non computerized carb.

 

[tw205]

I thought I would pull my 85 EVTM out and see exactly what it had fir vacuum diagrams. It was a bit disappointing...

View attachment 16252

I don't have a bunch of experience with the 2.8L.

I know most tend to switch to duraspark ignition... and also swap to a non computerized carb.

Your diagram is correct. One of the “to engine” hoses goes to the vacuum canister, which feeds thermactor egr systems. The other “ to engine” goes to the evap purge solenoid. I think I got those name right. That’s it for vacuum from the intake port.

 

[tw205]

PCV connects to the large vacuum port rear of carb on driver side. Oil cap ports to the air cleaner.

 

[Uncle Gump]

Doesn't the canister also supply the heater box? Or is that all mechanical?

 

[tw205]

Both my 85s are mechanical.