![]() |
|
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. |
|
![]() ![]() |
![]() |
930cabman |
![]()
Post
#1
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,482 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States ![]() ![]() |
Tracking down a low fuel flow issue, it looks like it starts with the flow directly from the tank. Sure, it's a small steel line, but the flow is very little. If the pump is not receiving enough, how can it push anything back to the engine. Drawing a blank
carbs, pump in front |
Superhawk996 |
![]()
Post
#2
|
914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 6,419 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch ![]() ![]() |
Clogged filter sock in tank most likely based on what you’ve posted.
The other possibility is kinked fuel line coming out of the tank. Least likely but not impossible is that the tank isn’t venting. Pop the fuel cap - if flow improves it’s venting. |
930cabman |
![]()
Post
#3
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,482 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States ![]() ![]() |
Clogged filter sock in tank most likely based on what you’ve posted. The other possibility is kinked fuel line coming out of the tank. Looking through the filler inlet I can see the sock looks reasonable. Will pull the tank later to look for a kink. The number of options for this is very low |
fixer34 |
![]()
Post
#4
|
Senior Member ![]() ![]() ![]() Group: Members Posts: 1,151 Joined: 16-September 14 From: Chicago area Member No.: 17,908 Region Association: Upper MidWest ![]() ![]() |
Are you checking at the metal pipe coming out of the tank, or a rubber line attached to it? If rubber line, it may be swollen.
If the metal pipe, carefully push a a piece of copper (soft) wire into the hose and tank. It should go in a good 3-4 inches. Just be ready if it clears out something, you will get all the fuel flow you ever wanted... If that doesn't do it, then probably time to pull the tank. If I recall, getting that pipe off while in the car is not easy. Maybe drain the tank using a siphon pump. |
Jack Standz |
![]()
Post
#5
|
Member ![]() ![]() Group: Members Posts: 353 Joined: 15-November 19 From: Happy Place (& surrounding area) Member No.: 23,644 Region Association: None ![]() |
Clogged filter sock in tank most likely based on what you’ve posted. The other possibility is kinked fuel line coming out of the tank. Looking through the filler inlet I can see the sock looks reasonable. Will pull the tank later to look for a kink. The number of options for this is very low You can see the fuel lines from under the car (and if you have a door covering the front fuel pump area, you can check the lines there too) without removing the tank. Good luck with the fix! |
930cabman |
![]()
Post
#6
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,482 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States ![]() ![]() |
Clogged filter sock in tank most likely based on what you’ve posted. The other possibility is kinked fuel line coming out of the tank. Looking through the filler inlet I can see the sock looks reasonable. Will pull the tank later to look for a kink. The number of options for this is very low You can see the fuel lines from under the car (and if you have a door covering the front fuel pump area, you can check the lines there too) without removing the tank. Good luck with the fix! I am not running a return line, so one of the lines on the bottom of the tank is plugged up. I had my feed line on the wrong one, switched them and now the sock is doing it's job and the flow is much better |
fixer34 |
![]()
Post
#7
|
Senior Member ![]() ![]() ![]() Group: Members Posts: 1,151 Joined: 16-September 14 From: Chicago area Member No.: 17,908 Region Association: Upper MidWest ![]() ![]() |
It's usually the simple things...
|
Jamie |
![]()
Post
#8
|
Senior Member ![]() ![]() ![]() Group: Members Posts: 1,046 Joined: 13-October 04 From: Georgetown,KY Member No.: 2,939 Region Association: South East States ![]() ![]() |
That sock is a useless item, much better to install an external filter right out of the tank before the pump which can then be visually checked and easily replaced. (IMG:style_emoticons/default/WTF.gif)
|
930cabman |
![]()
Post
#9
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,482 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States ![]() ![]() |
That sock is a useless item, much better to install an external filter right out of the tank before the pump which can then be visually checked and easily replaced. (IMG:style_emoticons/default/WTF.gif) Yes, I always install a filter as soon as the fuel exits the tank and another in the engine bay before the carbs |
![]() ![]() |
![]() |
Lo-Fi Version | Time is now: 7th September 2024 - 08:45 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |