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Vacuum Hose Hook Ups

40K views 4 replies 3 participants last post by  twoleos617  
#1 ·
Ok im sure there have been some similar post on here about it and I cant find the exact one that I am looking for. So heres what I got. I have a 79 258 that will crank and run but all te vacuum lines are not hooked up and I have found several diagrams that show how the lines are suppose to run. My question is without the stock breather and all the other valves and such, what is the easiest way to run vacuum lines? Off the valve cover, EGR valve, etc. If anyone has a simplified diagram that would be great.
Thanks.
 
#2 ·
When we disable the computer, we go for a basic simple vacuum line setup so all the basics work, like the gas tank vent, EGR, PCV. The thread on the Nutter bypass is for killing the computer, but it has this basic vacuum line setup explained well. You might want to check there first and then come back if anything needs clarification:

http://www.jeepforum.com/forum/showthread.php?t=522262&highlight=Nutter
 
#3 ·
Mike, I've completed the Nutter. run the vac lines as described in the Nutter thread. searched this site and others including sprynet.com for two days but still cant find a definate answer on what vac lines stay and what goes. i found one diagram on here but it was for a MC 2100. im all stock minus the wiring harness and TR upgrade. do you have a diagram showing only the necessary hoses and their routing? is it as simple as rerouting in the Nutter and keeping PCV and thats it?? surely not....i think...

thanks
 
#4 ·
Mike, I've completed the Nutter. is it as simple as rerouting in the Nutter and keeping PCV and thats it?? surely not....i think...

thanks
Yup, pretty much, the PCV system includes the canister and CTO valve and the EGR maybe as well as a ported line to the distributor. I also want the air cleaner lines working to prevent carb icing.

On the Stock Carter BBD or Carter-Weber BBD like mine, the drivers side back corner nipple goes to the air filter TAC (hot air flaps).

The big driver's side port on the bottom goes to the power brakes.

The center back big one goes to the PCV with a T fitting for the canister purge. If you have a solenoid on this line, toss it as a recall, only leave the T for the canister purge.

Back passenger side to choke pull off.

The valve cover side center goes to the distributor. It 'can' T for the CTO feed 'or'..

The front drivers side corner one goes to the CTO valve. From the CTO, a line goes to the canister purge signal 'and/or' one can be fed off this purge line to the air filter TVS and from there to the EGR.

Some folks feed the CTO to the TVS and then split off the line coming from this to make the canister and EGR lines.

Everything else is pretty much trash.
 
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