westfp

Helping out a friend who owns this 79' 928 with 184k miles. Some inexperienced hands has messed with this car to many times. Need to verify vacuum line routing and press regulator mounting on top of engine. Have the shop manual, but pictures in it are useless. Please if anyone has 78' or 79', can you send me some pictures, close up of diverter valve vacuum line routing, and mounting of press regulator. Here is what I am dealing with.


12/78' build date

hlee96

This is a diagram that I found during searching on this forum. May be for an euro engine, but the overall vacuum and fuel lines routing shouldn't be too different. Good luck!
-Hoi

linderpat

from my '78

Petza914

Not sure if these will be helpful or not, but here are the engine photos I have in my collection from my '79 K-Jet car.

kiwiokie

Noticed that the small diameter vacuum line from the center of the vacuum limiter is connected to the passenger side nipple on the throttle body on my '79, not the center nipple as shown on this diagram. Can anyone confirm that the center nipple is correct?

kiwiokie

Looking at 20-6 from vol 1A of the shop manual the diagram above is not complete for a CIS car with AC. The vacuum limiter is indeed connected to the middle nipple on the back of the throttle body but there is a T connector not shown in this line that links to the air pump diverter valve or blowoff switcher valve as described on the diagram.

westfp

Thank you all for posting pictures. Have not had a chance till today, to carefully look at pictures and compare what I have, 40 hr work week, gets in the way. But I did notice that the press regulator,(thing with blue, white and orange vacuum lines going to it) seem to be mounted between intake pipe #1 and intake pipe #2, which is where mine was, but loosely! But how is it mounted to the engine? In this picture from linderpat, from a 78', top left corner of picture you can just barely see the part I am talking about.

Kiwi'79

I can take some pics of mine this weekend, not sure they will provide much more info than Eds though.

linderpat

here you go:

Kiwi'79

Good on you Ed, what part # are the cardboard cut outs?...

linderpat

Ha! Nabisco 0928-01123

westfp

Thank you linderpat, now I need to find the bracket that I am missing which mounts the press regulator, to the, I assume, intake pipe bolt? Anyway great pictures from all of you, I really appreciate it. Now I need to know what this part is and confirm where the lines go. This is the placard under the hood, and a pix of this part, p/n 928 110 429 00. I think it is a control valve but the diagram shows two lines going to it, I have the one vacuum line and the two other larger vacuum hoses.