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 )

> Bleed injection? Newby to FI and 914s
Robson51
post Dec 7 2019, 06:38 PM
Post #1


Member
**

Group: Members
Posts: 88
Joined: 18-November 19
From: seattle
Member No.: 23,654
Region Association: Pacific Northwest



We removed and cleaned the fuel tank in my son's new to him 914. Also changed the fuel lines to stainless steel. Other than setting valves, nothing mechanical or electrical was done. Ran fine when parked a month ago.

He tried to start the car and nothing. I'm suspecting fuel, but I am new to fuel injection and don't know where to start, except to see that fuel is reaching the fuel pump. (I'm a webers on 912 guy)

Does the injection system have to be bled when it has been reduced to bone dry empty like this?

How is that done? A search of the threads has turned up nothing. This will be tomorrow's project.

Thanks-

Rob
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
Specracer
post Dec 8 2019, 06:33 AM
Post #2


Member
**

Group: Members
Posts: 100
Joined: 27-March 17
From: SE Mass
Member No.: 20,970
Region Association: None



The reason you dont need to bleed is that there is a return path, self bleeding.

My story, I have a 1.7, the PO moved the 3 port pump up to the front. Before the year or so restoration I have been doing, I got the car running in this configuration. Fast forward to some period of time during reassembly, I re plumed, the 3 port (all new lines), wont run. Note when I got the car initially running, I took the pump apart, cleaned it, and even bench tested and ran it. I have no idea what happened to the 3 port, during the year of sitting, but I cut my losses and switched to a new 2 port, re plumed, and now it runs again.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Chris914n6
post Dec 8 2019, 11:28 AM
Post #3


Jackstands are my life.
****

Group: Members
Posts: 3,407
Joined: 14-March 03
From: Las Vegas, NV
Member No.: 431
Region Association: Southwest Region



QUOTE(Specracer @ Dec 8 2019, 04:33 AM) *

The reason you dont need to bleed is that there is a return path, self bleeding.

My story, I have a 1.7, the PO moved the 3 port pump up to the front. Before the year or so restoration I have been doing, I got the car running in this configuration. Fast forward to some period of time during reassembly, I re plumed, the 3 port (all new lines), wont run. Note when I got the car initially running, I took the pump apart, cleaned it, and even bench tested and ran it. I have no idea what happened to the 3 port, during the year of sitting, but I cut my losses and switched to a new 2 port, re plumed, and now it runs again.

I recently picked up a recently used 3 port from a member. Did a quick test to verify it worked before putting it on the shelf and it was stuck. A few minutes of switching leads got it free. Evidently our wonderful ethanol blended gas gummed up the works as part of it evaporated.
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: 31st October 2024 - 05:24 PM