Carb question, need to dump little gas in carb just to get car started |
|
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. |
|
Carb question, need to dump little gas in carb just to get car started |
angerosa |
Apr 28 2013, 08:45 AM
Post
#1
|
Member Group: Members Posts: 334 Joined: 21-August 07 From: Reston, VA Member No.: 8,023 Region Association: MidAtlantic Region |
Seems that this year I need to put a little gas into the carb to get the car started initially. I have single Solex carb that no one seems to be able to identify. I'm sure some PO just pulled it off something that was sitting in a junkyard. Once I get car started and it warms up it idles OK but runs rough when you try to drive it. Timing is spot on. Recent (not too many miles ago) tune up with the help of some very knowledgeable 914world brethren. Let’s say it’s a given that there is nothing wrong with the engine. I have an idea of where to go next. I’ve had car for about 7 years. With only what I’ve told you here what’s your opinion?
|
ThePaintedMan |
Apr 29 2013, 09:19 PM
Post
#2
|
Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
Assuming it works like every other carb (and physics dictates that it does), you are correct. The accelerator pump should engage with the initial application of the throttle to a mechanically-activated shot of fuel with the in-rush of added air. On some carbs, like the later Webers, this can be adjusted based on how rich the idle circuit already is or how the carb transitions from idles to mains. Every engine "wants" something different. Is there any visible kind of adjustment on that carb, or a reason why it isn't activating with the initial application of throttle?
While you have it out, you might try to carefully remove the accelerator pump cover to inspect the diaphragm. If it's still supple, you could reinstall it and focus on figuring out why the arm isn't actuating the pump itself, and it might be enough to get you to the event you're trying to go to this weekend. However, since you've had the carb on the car for at least 7 years and with modern fuels, I still betcha it's time for rebuild. |
Lo-Fi Version | Time is now: 27th September 2024 - 01:14 AM |
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 ... |