Vacuum line diagram

[rebelfordmustang06]

Does anyone know where I can get the vacuum line diagrams for a '79 CJ 7 with a 304 automatic with quadra-trac?

 

[CJ]

I have nothing for that year (or even the series)... I'll keep looking though!

 

[WhsIV]

I'd like a good diagram for an 81 CJ7 with the 5 litre V8....

 

[PHIRE MANNN]

I wouldn't mind one for a 84 CJ7 with 4.2 I6

 

[WhsIV]

I've done a lot of research on the vacuum line issue and it's not a pretty story. There were so many variants that the manufacturers were tinkering with back in the late 70's and early 80's to try to keep up with the ever changing anti-pollution laws. The best comment I found in my research was that the manufacturers through a bunch of spaghetti on the engine and said 'this is what makes it meet the requirements'...

Anyway, The basics are that you need a working pvc valve and you want to make sure you keep a clean PVC filter installed in the air cleaner housing. You want the coolant temperature override valve hooked up, the distributor vacuum advance and the exhaust gas recirculation valve. I managed to get my 81 CJ to pass emissions inspection here in Finland by hooking up the EGR and CTO and the distrubutor vacuum advance only.

You may also have the purge canister for the fuel tank and or a couple other items....

I have found some places with info here are the links:
Vacuum Line Routing

and 83 diagram for California is here:
Jeep CJ7 Needs An Emissions Diagram

an 85 4.2L diagram is here:
Jeff Daniel’s Jeeps | Message Board | Vacuum diagram

an '82 diagram is here:
Jeep CJ-7 Needs A Vacuum Diagram

I may have a few others lying around in my PC if these don't help. Feel free to e-mail me: whsmith.4th@gmail.com if I can be more help.

 

[coldwater]

Does anyone know where I can get the vacuum line diagrams for a '79 CJ 7 with a 304 automatic with quadra-trac?

You'll have to copy and resize it. Sorry.

 

[coldwater]

I wouldn't mind one for a 84 CJ7 with 4.2 I6

Copy and resize, sorry.

 

[CJ]

I'd like a good diagram for an 81 CJ7 with the 5 litre V8....

I've done a lot of research on the vacuum line issue and it's not a pretty story. There were so many variants that the manufacturers were tinkering with back in the late 70's and early 80's to try to keep up with the ever changing anti-pollution laws. The best comment I found in my research was that the manufacturers through a bunch of spaghetti on the engine and said 'this is what makes it meet the requirements'...

Anyway, The basics are that you need a working pvc valve and you want to make sure you keep a clean PVC filter installed in the air cleaner housing. You want the coolant temperature override valve hooked up, the distributor vacuum advance and the exhaust gas recirculation valve. I managed to get my 81 CJ to pass emissions inspection here in Finland by hooking up the EGR and CTO and the distrubutor vacuum advance only.

You may also have the purge canister for the fuel tank and or a couple other items....

I have found some places with info here are the links:
Vacuum Line Routing

and 83 diagram for California is here:
Jeep CJ7 Needs An Emissions Diagram

an 85 4.2L diagram is here:
Jeff Daniel’s Jeeps | Message Board | Vacuum diagram

an '82 diagram is here:
Jeep CJ-7 Needs A Vacuum Diagram

I may have a few others lying around in my PC if these don't help. Feel free to e-mail me: whsmith.4th@gmail.com if I can be more help.

Nice post WhsIV and welcome to the site!