'75 L-Jet running rich "Smog Test Blues", OK I should of started this thread 3 days ago |
|
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. |
|
'75 L-Jet running rich "Smog Test Blues", OK I should of started this thread 3 days ago |
tabs914 |
Oct 8 2008, 12:35 AM
Post
#1
|
Advertise Your Drive... Group: Members Posts: 105 Joined: 17-January 05 From: Gresham, Oregon Member No.: 3,456 Region Association: None |
Gang, I need your help. I started out just running rich. So I made a very small adjustment to the AFM to lean it out. I also did a tune-up (cap, rotor, plugs and wires) No points (Compufire). I also replaced my ol faithful Bosch Blue Coil (12 years old) with the best I could find in a day (Standard Brand). Now I am running rich and with a nice case of hesitation and blubbering. Idle is good, but the minute I pull on the throttle a slight decrease on the RPM for a second then it picks up and blubbers at what ever point I pull the throttle up to. It does it at all RPM's. I haven't got on any stretch of road long enough to see if I can feel any hunting or jerking...I am almost certain that it would. I have tried to find posts on the site and I can't find any with my symptoms.
I checked all the vacuum lines for leaks.(cut old ends off and reattached) Checked the Pressure Regulator, vacuum side for leaks. Cleaned the throttle body (also made a rubber gasket for it) Cleaned the throttle switch (removed all the carbon deposits on the points.) Checked the AFM Flap for any damage (have you checked the price on these babies? Ouch!) I am at a loss...any advice you might have would greatly be appreciated. Thanks in advance... (IMG:style_emoticons/default/blink.gif) |
ClayPerrine |
Oct 9 2008, 12:59 PM
Post
#2
|
Life's been good to me so far..... Group: Admin Posts: 15,820 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
If you get a new AFM, they have to be calibrated for the engine they are working with. To do this, you need a flexible gas analyzer and to adjust after driving. This is not quite true. If you get the CORRECT air flow meter for a 75 914 with a 1.8L engine, it will be correctly calibrated. If you do that, please don't open it and mess things up trying to correct a problem with the root cause somewhere else. That is just a band-aid. |
Cap'n Krusty |
Oct 9 2008, 01:47 PM
Post
#3
|
Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
If you get a new AFM, they have to be calibrated for the engine they are working with. To do this, you need a flexible gas analyzer and to adjust after driving. This is not quite true. If you get the CORRECT air flow meter for a 75 914 with a 1.8L engine, it will be correctly calibrated. If you do that, please don't open it and mess things up trying to correct a problem with the root cause somewhere else. That is just a band-aid. These guys don't wanna hear that, Clay. Forget strategy, concentrate on tactics ... The Cap'n |
Lo-Fi Version | Time is now: 27th September 2024 - 07:59 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 ... |