Vacuum Lines

[ls_bcrr29]

Hello,

I am in the process of getting my grandfather's car back on the road. Its a 79 Plymouth Volare. So far I replaced front calipers they were seized did transmission service adjusted the bands and throttle lever adjustment. Replaced cap rotor plugs and wires, oil change. The car hadn’t been touched since 2010, I am trying to figure out vacuum lines and some plugs, they aren't connected and I don't know where they go. Thanks for any help.

 

[AMC Diplomat]

Check out the slant 6 forum. '79 Volare Carburetor Vacuum Lines/Charcoal Canister question - Slant Six Forum

That plug you're holding in that one pic looks like part of the lean burn computer harness.

Idk if your car is slightly different for California emissions. There should be a sticker with the vacuum diagram. My car was missing the sticker so I know they can fall off.

 

[Mikes5thAve]

Maybe your hood was replaced at some point? That's one sticker you can hardly peel off, they're on there.

 

[M_Body_Coupe]

Was this a LeanBurn car that was converted to a standard electronic ignition?

I ask b/c in that one photo you are holding a 10-pin plug that very much looks like harness plug for the LB computer, w/o which the car won't run.

So does the car run now, or it hasn't even been started since it got parked?

 

[ls_bcrr29]

Maybe your hood was replaced at some point? That's one sticker you can hardly peel off, they're on there.

The sticker is there but it is damaged.

 

[ls_bcrr29]

Was this a LeanBurn car that was converted to a standard electronic ignition?

I ask b/c in that one photo you are holding a 10-pin plug that very much looks like harness plug for the LB computer, w/o which the car won't run.

So does the car run now, or it hasn't even been started since it got parked?

Im not sure what leanBurn means but yes its starts up now but I can Hear vacuum leaks and the car runs kinda rough. I adjusted the Transmission/carb kickdown also need to add 1qt transmission fluid and I will test again

 

[M_Body_Coupe]

Im not sure what leanBurn means but yes its starts up now but I can Hear vacuum leaks and the car runs kinda rough.

LeanBurn was the Chrysler/Mopar updated ignition system that replaced the transistor based ECU units.

Basically the LeanBurn (LB for short) is a plastic box typically attached to the side of the air filter housing (though not always AFAIK). It contained an electornic circuit board made up of various chips which were factory programmed to provide the ignition functionality that the old transistor switching ECUs used to provide.

There usually were various sensors attached to it, such as the electronic version of the vacum advance can, etc. This required a different distributor as well, one without the mechanical advance because such advance signal was now handled by the LB computer.

My point in asking about that plug was that unless the LB stuff is hooked up the car normally won't even start and certinaly will not run.

So this is interesting...