 air bubbles |
|
|
|
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. |
|
|
  |
| Gearren |
 Aug 11 2004, 06:11 PM
Post
#1
|
|
Member  Group: Members Posts: 91 Joined: 18-July 04 From: New Bern, NC Member No.: 2,362  |
I have just got my 73 2.0 back and running, rebuilt the carbs, new distribtor, points, wirers, ect., but just the other day while trying to tune the carbs I noticed air bubbles cumming up through the clear fuel line that comes through the body of the car and the are bubble are collecting to for one big bubble in the hose just before the carb., any ideas.
|
   |
 
|
| ArtechnikA |
Aug 11 2004, 06:27 PM
Post
#2
|
|
rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
IME - they all do that...
if it's objectionable, find an opaque fiilter ... |
|
|
|
| tommy914 |
Aug 11 2004, 07:48 PM
Post
#3
|
|
Life is a journey, enjoy every turn. Group: Members Posts: 1,103 Joined: 15-September 03 From: Ridgeland, MS Member No.: 1,165 Region Association: None |
I've had carbs for years and haven't seen bubbles.
I have clear filter mounted on the side by the battery just after the fuel line comes up from below the engine shelf. My fuel pump is up front directly under the tank. Where is your pump mounted? |
|
|
|
| SLITS |
Aug 11 2004, 09:10 PM
Post
#4
|
|
"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
When filling the tank, the fuel is aerated. If your tank and lines have been empty for a period of time, those bubbles can adhere to lines (cohesive) and get washed off after a time of flow. Fill a glass of water and watch.
Otherwise you could be sucking some air on the suction side of your pump at the pump fitting, but......, |
|
|
|
| ArtechnikA |
Aug 12 2004, 07:08 AM
Post
#5
|
|
rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
QUOTE(tommy914 @ Aug 11 2004, 05:48 PM) Where is your pump mounted? i have most observed this phenomonon on a succession of T-I and T-III VW engines and the 356, where the mechanical fuel pump is bolted to the crankcase and actuated by a pushrod off the distributor drive gear. i've seen it to a lesser extent in the 914.6 where the pump was still located in its original place, under the tin. IIRC (been a while...) the hot air from the 914.6 heat exchanger dump valve isn't quite as badly located as it was with the 914.4 ... after that cama a succession of fuel-injected cars with opaque lines... if it's really hot, you could be seeing a bit of pre-vapor lock. it would be prudent, of course, to check for leaks, because if air is getting in, fuel is probably getting out. i think you're just seeing the result of entrained air due to sloshing, however... |
|
|
|
| Bruce Allert |
Aug 12 2004, 07:19 AM
Post
#6
|
|
Hellions asleep Group: Members Posts: 3,289 Joined: 19-March 03 From: Eagle Creek, Orygun Member No.: 441 Region Association: Pacific Northwest |
QUOTE(ArtechnikA @ Aug 11 2004, 05:27 PM) if it's objectionable, find an opaque fiilter ... (IMG:style_emoticons/default/laugh.gif) thanks for the early morning chuckle Rich (IMG:style_emoticons/default/laugh.gif) that was GUD (IMG:style_emoticons/default/beer.gif) .........b |
|
|
|
| Joe Ricard |
Aug 12 2004, 11:27 AM
Post
#7
|
|
CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
I get air bubbles stuck to my beer glass when I pour a Guiness. Hmm but that is a good thing. Same principle????? Aerated fuel when filling. I'll buy that.
|
|
|
|
| tdgray |
Aug 12 2004, 01:45 PM
Post
#8
|
|
Thank God Nemo is not here to see this Group: Members Posts: 9,705 Joined: 5-August 03 From: Akron, OH Member No.: 984 Region Association: None |
QUOTE(Joe Ricard @ Aug 12 2004, 09:27 AM) I get air bubbles stuck to my beer glass when I pour a Guiness. If that offends you get an opaque glass (IMG:style_emoticons/default/biggrin.gif) MMMM Guiness (IMG:style_emoticons/default/beer3.gif) (IMG:style_emoticons/default/beer3.gif) (IMG:style_emoticons/default/beer3.gif) |
|
|
|
| SLITS |
Aug 12 2004, 05:58 PM
Post
#9
|
|
"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
(IMG:style_emoticons/default/beer3.gif) Toothsheaf Stout - bigger bottle - more bang for the buck (IMG:style_emoticons/default/drunk.gif)
|
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 16th May 2024 - 03:05 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.