[Unknown User]

i have a 1977 280z coupe 4speed. i tried the oil cap trick and it made no change in the idle. so i said, "screw it" i'm just gonna replace ALL of the vacuum lines. the thing is, i don't think they are all in the correct placement to begin with, and some make no sense. so i need someone to email me a complete vacuum diagram, if possible. also, on the right side of the engine compartment, there are 2 of what looks like vacuum switches, round with a vacuum line attachment. the rear one is hooked up, but the front one is'nt. what do these control? help would be appreciated.

 

[Unknown User]

does'nt anyone have a complete vacuum diagram? i got one reply, but it was just the heater vacuum routing. I'M LOST!!!!

 

[Zoomer]

Bug,

The factory service manual doesn't have a single diagram of all the vacuum lines, at least not in the '76 manual I have. The vacuum lines aren't all shown in the same section, so if you have specifc areas you would like to know about, I can help you out. I also have a '77 factory manual now, but I would expect it to be organized the same but haven't checked. You'll see many people recomending a factory service manual and it truely is a good investment. Later, Zoomer

 

[Unknown User]

ok, so noone has a vacuum diagram. could you tell me if this is right: one vacuum line comes off the intake, to the dist. vacuum advance where it tees and runs to the charcoal canister? also, what are those 2 vacuum switches on the right hand side of the engine compartment for?

 

[davz280]

there is a complete diagram in 1977 shop manual; sent snail mail, will copy and send , the two vacumn switches on r sie operate heat/air controls, if one is disconnected you will not have operation of system.


d.....

 

[davz280]

p.s. if vac lines are missing on vac switches, are they plugged off? those line are in series with eachother, should be all connected for proper operation??????

d.....

 

[Unknown User]

thank you!!! exactly what i was looking for! what do you mean sent snail mail?
if you mean you will send to me, my address is:

chris rice
po box 1293
ocean springs, ms 39564

i really appreciate the help, this site has been great. the main thing that was confusing me is where the line t's at the dist. and goes to the charcoal canister,,,makes no sense. Thanks!