Vacuum Help Please-
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Freshman User
Joined: Jan 2003
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From: Folsom
Vacuum Help Please-
I have a 78 F250 (49 State) 400 2V. I just put on all the smog stuff. I now have EGR, 2150 Carb, PVS (3 pronged), and stock air cleaner. I went to the site Dennis' recommends and cannot find the correct application for my truck. The Chiltons and Hayes manuals I have are useless. My truck doesn't have thermactor and air pump.
Please help if you can!
1. Where does EGR vacuum line go to?
2. On the PSV I know that the port marked "D" goes to distrubuter, but what do ports marked 1 and 2 go to?
3. There are 4 different vacuum connections on the air cleaner. (2 double ports) Where do these go?
4. Which ports on the carb are used and where do they go?
Send digital pictures of your truck if you have the same setup if you think it would help.
Thanks!!!
Please help if you can!
1. Where does EGR vacuum line go to?
2. On the PSV I know that the port marked "D" goes to distrubuter, but what do ports marked 1 and 2 go to?
3. There are 4 different vacuum connections on the air cleaner. (2 double ports) Where do these go?
4. Which ports on the carb are used and where do they go?
Send digital pictures of your truck if you have the same setup if you think it would help.
Thanks!!!
Posting Legend
Joined: Sep 2001
Posts: 30,255
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Vacuum Help Please-
Use the one for a 1979 6.6L #9-17P-RO dated 8-16-78. It looks the most like the system on my 78F250/400.
Hope this helps...
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Hope this helps...
Thanks for using FTE!
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New User
Joined: Jan 2008
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Vacuum Help Please-
You need Vacuum calibration code diagram 7-74-R10
Dennis
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Thread Starter
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Freshman User
Joined: Jan 2003
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From: Folsom
Vacuum Help Please-
Dennis...That diagram is not listed on the Autozone web page.
Do you have any idea where an online diagram can be located?
Do you possibly have a .pdf file you can email me?
Do you have any idea where an online diagram can be located?
Do you possibly have a .pdf file you can email me?
New User
Joined: Jan 2008
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Vacuum Help Please-
Sorry, I don't have it.
Dennis
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Mountain Pass
Joined: Jun 2000
Posts: 242
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From: earth
Vacuum Help Please-
I've some different vacuum diagrams for 78 ford 400's that I copied from the local library. The pictures (3 of them) aren't small (900KB each, but very good detail), but I will e-mail them if asked. These cover the "Pickup, Federal with auto trans" and "Pickup and Bronco, California with auto trans."
Chris
Chris
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