Help with Vac Lines (1 Viewer)

[DonBScurd]

Haven’t gotten a hold of an emission book, yet. But can someone help me with this. Looks like one line was looped back….while another is missing.

Thanks.

 

[Spike Strip]

Free Download

FSM - 2F Engine Emission Control, 1981, 36043E

forum.ih8mud.com

 

[2mbb]

This view from the parts diagram might be easier to reconstruct. The hose I highlighted in blue attached to a port on the air cleaner.

I have also attached a PDF with various vacuum schematics I have collected.

 

[DonBScurd]

This view from the parts diagram might be easier to reconstruct. The hose I highlighted in blue attached to a port on the air cleaner.

I have also attached a PDF with various vacuum schematics I have collected.

View attachment 3540065

Thank you thank you.

 

[DonBScurd]

This view from the parts diagram might be easier to reconstruct. The hose I highlighted in blue attached to a port on the air cleaner.

I have also attached a PDF with various vacuum schematics I have collected.

View attachment 3540065

Well, damn. I wonder if that’s the reason why I can’t drive past 45 mph….

 

[kirvesmies]

Well, damn. I wonder if that’s the reason why I can’t drive past 45 mph….

View attachment 3540140

well, plug it in n go for a test drive report back

 

[2mbb]

The VCV (23275 on the schematic I posted above) has four ports. I only see 3 tubes connected. The one on the bottom (as oriented in the schematic) is connected to manifold vacuum. If that piece of tubing is not connect to the VCV or plugged you may have a vacuum leak.

 

[DonBScurd]

The VCV (23275 on the schematic I posted above) has four ports. I only see 3 tubes connected. The one on the bottom (as oriented in the schematic) is connected to manifold vacuum. If that piece of tubing is not connect to the VCV or plugged you may have a vacuum leak.

Ok I’ll take a look tomorrow. Just reconnected that one I inquired about and what
a night and day difference. Able to use all 4
gears without any bogging.

The plan is to inspect and replace any bad vacuum lines, reconnect as well.

You’ve been a big help. Thanks!

 

[DonBScurd]

The VCV (23275 on the schematic I posted above) has four ports. I only see 3 tubes connected. The one on the bottom (as oriented in the schematic) is connected to manifold vacuum. If that piece of tubing is not connect to the VCV or plugged you may have a vacuum leak.

Pulled the cat. Had a new one installed. NOW I can drive past 45 mph. Will do a complete tune-up and valve adjustment next.