Help - Djet running way too rich |
|
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. |
|
Help - Djet running way too rich |
Halfnelson |
Jul 23 2021, 06:51 AM
Post
#1
|
Newbie Group: Members Posts: 46 Joined: 31-July 17 From: Cornwall Member No.: 21,303 Region Association: England |
Help - my new to me 1973 1.7 Djet came running really sweet, but almost immediately developed the 'hunting tick-over' of lean running / air leak. We replaced all the vacuum pipes, found one of the inlet gaskets had a very slight leak. Seems somewhere along the line things have been tweaked to compensate for the leaks so that now they're cured, the car is running super rich. Having had a L-jet for years the Djet is new to me so any advice on where to start first would be much appreciated. Thanks Chris
|
Halfnelson |
Aug 11 2021, 08:45 AM
Post
#2
|
Newbie Group: Members Posts: 46 Joined: 31-July 17 From: Cornwall Member No.: 21,303 Region Association: England |
Thanks for everyone's feedback on this. I've finally got an update on things. After a couple of false dawns I'm hoping we've nailed the issue. Total work included:
Checking MPS - OK New fuel lines, filter and fuel pump Sorting the ignition as the spark was weak - so new coil etc Going through all wiring and fuses New CHT sender New plugs for injectors My guess is multiple small faults adding up to a lot of head scratching when we thought the problem was solved... only for it not to be. Done a few local trips including a car show at the weekend. Fingers crossed now for a longer test drive. |
Rand |
Aug 11 2021, 06:30 PM
Post
#3
|
Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
I would have bet MPS. How was it tested?
A simple test: With car running, pull the hose off the MPS (at the mps end) and tell us what happens to the RPMs. (Actually, that's a good checkup for all of us DJet users to do every couple years.) |
Lo-Fi Version | Time is now: 28th May 2024 - 09:13 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 ... |