Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> Attempt to start day 2 - vacuum lines setup
lsintampa
post Aug 11 2013, 08:50 AM
Post #1


Senior Member
***

Group: Members
Posts: 520
Joined: 28-January 13
From: Tampa, FL
Member No.: 15,441
Region Association: South East States



75 914/4 CA car 2.0 D-jet

The head holes for smog control were blocked, there is NO smog pump. I don't have a anti-flashback valve (whatever that is).

I've searched, read, and looked at all the diagrams of hose layouts - but I'm just not getting the whole picture. In my defense, this is my first FI car, so I'm still learning - albeit slow.

The problem I have with the drawings is they don't clearly show if the hose goes to the plenum or the air filter.

So I went and took some notes. There are 5 places that I can easily identify (plenum, dizzy vacuum, air filter box, and motor) that have hose connections and only few devices that they can plug into:

Devices:

1) Dizzy vacuum - has two hoses both go to the throttle body - DONE

2) MPS - has only ONE hose port - I assume goes to the plenum - would not make sense to go anywhere else. DONE

3) The De-accel thing has three ports (one small and two other medium sized), I don't know if one goes to the plenum and two to the air filter or the other way around. All I know it there is one smaller diam hose and two others the same size. NOT DONE.

4) AAR - one hose comes from the cold start valve, but where does the other hose go. My guess is to the air filter - since the one from the cold start is in the plenum. Maybe done?

5) That leaves the air filter - it has 5 hose ports (but one of them that is at the tip has some sort of T looking mounting bracket that is blocked off). Not done.

I would guess that NO hose goes from the plenum to the air filter box - makes no sense.

On the plenum there are five points where air can enter

1) the throttle body done!
2) the cold start valve - goes to the AAR - done!
3) the MPS
4) ??
5) ??

And finally there are 2 hose ports on the motor (that I can see), one on the right near the fan shroud and one in the engine tin on the left side. I'm guessing they run into the air filter box - as I don't see where else they can go. No pressure on those so I'm thinking it's just fumes and stuff.

Everyone that has chimed in has been very helpful and I really appreciate all your help. For all that have helped, I'm sorry this is dragging out and also for the redundancy of my questions.

Thanks,

Len











User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Posts in this topic


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 27th December 2024 - 04:13 AM