Emissions / vac line hookup questions

[suburble]

OK, so I'm going to take the '86 burb C-20 in for a shot at emissions later this week. The P/O had completely hacked up the vacuum lines and unhooked the emissions stuff. I've made a lot of headway, but I'm stuck right now because I think I'm missing the Distributor Delay valve completely, and I wanted to verify the other items.

Here are my questions:

-Have I labeled the valves in the pictures correctly?
-Do I hook the transmission vac governor to ported or full vacuum? (It had been hooked directly to port "J" in the vac diagram, but a bunch of other stuff was missing, plus it wasn't shifting great)
-The EFE valve is hard-lined into a port at the back of the manifold near the distributor; Anybody know what this is? Port to manifold vacuum? Thermal Switch? I can't place it on the vac diagram


Thanks in advance,
-Josh

 

[chengny]

-Have I labeled the valves in the pictures correctly? -

Yes


-Do I hook the transmission vac governor to ported or full vacuum? (It had been hooked directly to port "J" in the vac diagram, but a bunch of other stuff was missing, plus it wasn't shifting great)

The vacuum signal to the transmission modulator needs to see full manifold vacuum. You have it plumbed correctly as shown in the image. The other branch is probably the vacuum supply to the HVAC system - it tee's off again to the spherical vacuum reservoir on the far LH side of the firewall.


-The EFE valve is hard-lined into a port at the back of the manifold near the distributor; Anybody know what this is? Port to manifold vacuum? Thermal Switch? I can't place it on the vac diagram

I am fairly certain this is how the EFE is connected:

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[suburble]

-Have I labeled the valves in the pictures correctly? -

Yes


-Do I hook the transmission vac governor to ported or full vacuum? (It had been hooked directly to port "J" in the vac diagram, but a bunch of other stuff was missing, plus it wasn't shifting great)

The vacuum signal to the transmission modulator needs to see full manifold vacuum. You have it plumbed correctly as shown in the image. The other branch is probably the vacuum supply to the HVAC system - it tee's off again to the spherical vacuum reservoir on the far LH side of the firewall.


-The EFE valve is hard-lined into a port at the back of the manifold near the distributor; Anybody know what this is? Port to manifold vacuum? Thermal Switch? I can't place it on the vac diagram

I am fairly certain this is how the EFE is connected:

You must be registered for see images attach

You must be registered for see images attach

FFFFFFFFuuuuuuuuuuuu*****!!!!!!

You are correct, that line did trace back to EFE, and transmission was the one hooked into manifold vacuum.

P/O had EFE hooked into port "J" on vac diagram (ported vacuum?) and I thought it was transmission governor!

Between that and an uncapped port to manifold vacuum where the hard line going to the governor T's, I think this explains a lot of my issues.

I tried switching that line to direct manifold vacuum, thinking it was the shift gov, and it ran worse, so I switched it back. D'Oh!

Thanks!

-Josh

 

[suburble]

Refinement of this thread continued in new thread "Vacuum Advance Question"

Thanks,
-Josh