First drive running rough, 2.0 weber 40's |
|
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. |
|
First drive running rough, 2.0 weber 40's |
skota23 |
Feb 20 2023, 09:10 AM
Post
#1
|
Newbie Group: Members Posts: 35 Joined: 28-November 22 From: Madison, WI Member No.: 26,993 Region Association: Upper MidWest |
Hi Folks,
I was able to take my new to me 914 for a short drive yesterday. The car is a 74 with what I think is the original 2.0. It has Dual weber 40's and what I think is the stock distributor. The cap and rotor look practically new and the plug wire in good condition. It wouldn't start a few weeks ago and I pulled the plugs (NGK 7) and cleaned them, fired right up after that (Never had webers before and I think I flooded the cycling a little pumping the gas pedal thinking it would help start. Other observations. The few times I have started it (usually after sitting over a week) I crank the engine, and give a dab of the gas pedal to get it to fire, usually takes several tries to get. running. After warming up a bit engine goes through revs well. On the drive the engine runs very rough usually between 2-3k its barely pulling. Lots of hesitation and at odd times it pops to live a pulls great. My first thought is to pull the carbs, do a thorough cleaning and check to see what jets are fitted and the condition of the floats. Also planned are a timing check, valve adjust, oil and filter, fuel filter. Is there any other details I can provide for suggestions on how to get things running well? (IMG:style_emoticons/default/poke.gif) Thank you! Steve Attached thumbnail(s) |
skota23 |
Feb 21 2023, 08:59 AM
Post
#2
|
Newbie Group: Members Posts: 35 Joined: 28-November 22 From: Madison, WI Member No.: 26,993 Region Association: Upper MidWest |
Thanks Folks, theres alot of good advise and places to start.
Some of you may be familiar with the car. It used to belong to Joan who was married to Dave from Triad West. I'll make sure to give a proper update on the car and some of the things that came with the car that will pay respect to Joan and Dave. Here are a few more notes to clear up any confusion. Its a 2.0 with Weber 40's the 40's have 28 venturis installed Car slightly hard to start (but its cold here in Wisconsin) Idle is fine after warming up Car runs poorly (*pretty much undrivable) when load is applied and mostly between 2-3k More info to share with the group. Location and type of fuel pump Fuel pressure regulator More photos of general setup To do list New fuel filter Adjust valves check timing Pull carbs and clean (what are the odds it will need a rebuild kit?) Theres probably more and I'll post things as I make progress and have questions. Thanks again! Attached thumbnail(s) |
Superhawk996 |
Feb 21 2023, 09:10 AM
Post
#3
|
914 Guru Group: Members Posts: 5,876 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Its a 2.0 with Weber 40's the 40's have 28 venturis installed Car slightly hard to start (but its cold here in Wisconsin) Idle is fine after warming up Car runs poorly (*pretty much undrivable) when load is applied and mostly between 2-3k Clean the carbs well. Make sure the tiny holes (the transition holes) above the throttle plate are clear. The transition ports are doing the fuelling up to about 2500-3000 RPM. Set float levels (often overlooked) per Weber manual. Just get the carb rebuild kits. Odds are very high o-rings, gaskets, diamphram for the accelerator pump, and the seal on the float needle have all seen better days. The kit is cheap relative to the time and labor to go though the carbs, and to resynch when all is reinstalled. Don’t be cheap. Do it right. You’ll be back in business. |
Lo-Fi Version | Time is now: 2nd June 2024 - 06:48 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 ... |