 Ok, I'm defeated. D-Jet help please..., super lumpy, super 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. |
|
|
| audio_file |
 May 10 2015, 10:23 PM
Post
#1
|
|
Member  Group: Members Posts: 295 Joined: 6-August 11 From: Everett, Wa Member No.: 13,409 Region Association: Pacific Northwest  |
Car info: 75 2.0 Djet stock except pertronix.
Last month I took the carbed 2.0 out of my silver car and put in another 2.0 with Djet. She's been a daily driver since then, and has done well except for running really rich, with the associated rough cold start and nearly impossible "hot" start. She was also getting MAYBE 15 mpg. Thursday night, I started the car after going into the store and it would barely fire up, running VERY choppy, like it was missing on a cylinder or more. It also wouldn't hold idle at stop lights (it would sputter and die and then refuse to re-start) and surged and sputtered as it went down the road, the only way I made it home was to avoid stopping completely until I got home. Now, when I start the car, it surges and tumbles, putting out a MASSIVE amount of blue/black smoke and refusing to accelerate or idle (see video) and it smells super rich. CLUCK FOR VIDEO (IMG:http://www.914world.com/bbs2/uploads_offsite/i219.photobucket.com-13409-1431318216.1.jpg) I have: Removed a leaky cold start injector (dripping constantly, maybe 1/4 cup per 15min) Replaced very fouled plugs that had been in the car for the past month, see pic) (IMG:http://www.914world.com/bbs2/uploads_offsite/i219.photobucket.com-13409-1431318216.2.jpg) Checked and cleaned trigger points in distributor Soaked Aux-Air valve in pb-blaster and then verified proper function Replaced the fuel pressure regulator Verified spark Replaced cap/rotor And none of that has changed how she runs. It's so bad that the engine rocks side-to-side. Finally I even stated screwing with the timing, but that's really made no difference. I'm lost, and I need help being pointed in the right direction(s) to fix this PLEASE!! |
   |
 
|
  |
Replies
| lonewolfe |
May 11 2015, 06:43 AM
Post
#2
|
|
Senior Member Group: Members Posts: 819 Joined: 12-September 11 From: Oakland, CA Member No.: 13,549 Region Association: Northern California |
Check that all the wires going to the injectors are pushed on tightly. When I bought my car it was running like yours. I got a great deal as a result. After I bought it, I drove it a couple of blocks, pulled over and started checking all these wires. One of the fuel injector wires was completely loose. I plugged it back in and the car ran great! It was a great day!
|
|
|
|
Posts in this topic
audio_file Ok, I'm defeated. D-Jet help please... May 10 2015, 10:23 PM
brant Test the cht resistance and mps vacuum. May 10 2015, 10:36 PM audio_file
Test the cht resistance and mps vacuum.
Will do... May 10 2015, 10:38 PM Jeff Bowlsby These go rich when:
Fuel pressure too high
Leaky ... May 10 2015, 10:45 PM
audio_file
These go rich when:
Fuel pressure too high
Leaky... May 10 2015, 11:19 PM 914_teener
These go rich when:
Fuel pressure too high
Leak... May 10 2015, 11:32 PM
KELTY360
@kelty, did you replace or rebuild?
I replaced ... May 11 2015, 06:56 AM r_towle
These go rich when:
Fuel pressure too high
Leaky... May 12 2015, 08:07 AM KELTY360 I had symptoms like that once and it turned out to... May 10 2015, 11:06 PM Jeff Bowlsby TS1 is the intake air temp sensor in the air plenu... May 10 2015, 11:30 PM Tbrown4x4 ^^^ This is probably the quickest test.
Bad diaph... May 11 2015, 02:59 AM Philip W. it could be a bad cht too but im betting on a MPS ... May 11 2015, 07:08 AM luskesq Confirm that your ignition wires are hooked up cor... May 11 2015, 08:21 AM audio_file Bought the vacuum tester, as soon as I'm done ... May 11 2015, 10:05 AM audio_file Plugged the vacuum pump into the MPS and pumped...... May 11 2015, 10:23 AM Spoke
Plugged the vacuum pump into the MPS and pumped..... May 11 2015, 10:47 AM DavidSweden
Plugged the vacuum pump into the MPS and pumped..... May 11 2015, 10:59 AM OU8AVW
Plugged the vacuum pump into the MPS and pumped.... May 11 2015, 11:14 AM Philip W.
Plugged the vacuum pump into the MPS and pumped..... May 11 2015, 11:20 AM audio_file
well there you go!! i'm amazed that i... May 11 2015, 11:41 AM Philip W. they do take a while to sort but once you do you w... May 12 2015, 07:24 AM audio_file Update: picked up a known (and tested) good MPS fr... May 14 2015, 08:40 PM r_towle FI trigger points.
Take four baby food GLASS jars... May 14 2015, 08:43 PM audio_file
FI trigger points.
Take four baby food GLASS jar... May 14 2015, 08:46 PM audio_file All 4 injectors fired, looks to be an equal amount... May 14 2015, 08:59 PM r_towle You did that in ten minutes, impressive.....takes ... May 14 2015, 09:02 PM audio_file
You did that in ten minutes, impressive.....takes... May 14 2015, 09:11 PM audio_file :bump: for the morning crew... May 15 2015, 05:54 AM Jeff Bowlsby Be methodical and go through the test chart in thi... May 15 2015, 06:49 AM audio_file
Be methodical and go through the test chart in th... May 15 2015, 09:06 AM audio_file Update: :angry:
Was running rough and rich...
Re... May 17 2015, 12:11 PM Mblizzard
Update: :angry:
Was running rough and rich...
R... May 17 2015, 07:20 PM audio_file Anything guys/gals? :bump: May 17 2015, 07:02 PM The Cabinetmaker Can you hear the fuel pump when you turn the key t... May 17 2015, 08:17 PM r_towle Start at the beginning.
Do you have fuel?
Do you h... May 17 2015, 08:33 PM Tbrown4x4
Start at the beginning.
Do you have fuel?
Do you ... May 18 2015, 06:14 AM audio_file Fuel pump runs as it should.
I have fuel pressure ... May 17 2015, 09:04 PM Old Yella I think your timing is off.
Get a pertronix set t... May 17 2015, 11:56 PM Philip W. it can be difficult to figure out where you went w... May 18 2015, 05:59 AM Vacca Rabite Break out an advance adjustable timing light. set... May 18 2015, 06:28 AM audio_file
Break out an advance adjustable timing light. se... May 18 2015, 09:09 AM Bob L.
Break out an advance adjustable timing light. s... May 18 2015, 11:06 AM audio_file
Nothing to fear... as long as you can change a ... May 18 2015, 11:48 AM audio_file Quick question; the wire connectors at the distrib... May 18 2015, 03:31 PM The Cabinetmaker
Quick question; the wire connectors at the distri... May 18 2015, 04:34 PM euro911 Quick question; the wire connectors at the distrib... May 19 2015, 04:57 AM toadman It is possible, but not likely, that the ECU/fuel ... May 18 2015, 07:09 PM audio_file Ok, riddle me this batman;
How does a 914 go thru... May 18 2015, 07:40 PM Mblizzard
Ok, riddle me this batman;
How does a 914 go thr... May 18 2015, 07:48 PM Racer Chris
How does a 914 go thru 1.75 gal of gas in 2min?... May 19 2015, 11:17 AM audio_file I removed the cold start valve earlier this week, ... May 18 2015, 08:03 PM 914_teener So when Bowlsby sent you the flow chart in the Bos... May 18 2015, 09:40 PM audio_file
So when Bowlsby sent you the flow chart in the Bo... May 18 2015, 10:19 PM 914_teener
So when Bowlsby sent you the flow chart in the B... May 19 2015, 09:21 AM 76-914 Just stumbled upon this thread. Looks like it... May 19 2015, 10:50 AM audio_file
Just stumbled upon this thread. Looks like it... May 19 2015, 11:41 AM BeatNavy Go back and test the CHT resistance like was sugge... May 19 2015, 12:09 PM 914_teener back and test the CHT resistance like was suggeste... May 19 2015, 03:05 PM rhodyguy take a day and put the carbs on the current engine... May 19 2015, 12:52 PM audio_file
take a day and put the carbs on the current engin... May 19 2015, 02:28 PM audio_file
Replaced CHT sensor as the old unit measured 13-... May 19 2015, 04:30 PM 914_teener
Replaced CHT sensor as the old unit measured 13... May 20 2015, 11:48 AM euro911 :headbanger:
:parry: May 19 2015, 04:46 PM Tom I didn't see in the previous posts where you p... May 19 2015, 06:54 PM audio_file
I didn't see in the previous posts where you ... May 19 2015, 07:01 PM Mblizzard Ok this is a guess but have tried removing the wir... May 19 2015, 07:11 PM audio_file
Ok this is a guess but have tried removing the wi... May 19 2015, 07:29 PM Old Yella Hi
I think I know what sort of frustrations you ar... May 19 2015, 10:03 PM audio_file Thanks Old Yella, was that an offer? A plane ticke... May 19 2015, 10:36 PM Tom If the injectors are firing then yes the wiring fr... May 20 2015, 04:40 AM BeatNavy :agree: It's not just the sensors - it's ... May 20 2015, 05:54 AM 76-914 I agree with Tom. Your getting a faulty signal. CH... May 20 2015, 08:20 AM audio_file Fingers crossed, trying another injection harness ... May 20 2015, 09:44 AM audio_file @914_teener :beer2: May 20 2015, 01:00 PM euro911 Beer Summit ! :beer2: May 20 2015, 01:37 PM Old Yella I checked out your video again and I swear to god ... May 20 2015, 04:38 PM Tom Please do an electrical check of the replacement h... May 20 2015, 05:04 PM sixnotfour It Runs......................... :driving:
... May 20 2015, 05:31 PM SLITS by that statement and the fact you can't hotli... May 20 2015, 09:47 PM sixnotfour maybe I didn't want to hot link it Ron...actua... May 20 2015, 10:11 PM SLITS
then I get the fuch out there before some one saw... May 21 2015, 06:44 AM KELTY360
then I get the fuch out there before some one sa... May 21 2015, 06:54 AM Old Yella Thank f@#%$#ing god May 21 2015, 12:07 AM rhodyguy a battery :rolleyes: <_< :trophy: rock on... May 21 2015, 01:34 AM Kansas 914
utah is picking up a valuable asset.
:agree: May 21 2015, 06:12 AM audio_file Too much gunk (from running with a bad MPS for so ... May 21 2015, 09:08 AM sixnotfour It was an "Italian Tune Up" the origina... May 21 2015, 09:15 AM Phoenix914 :clap: May 21 2015, 09:16 AM |
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 2nd April 2026 - 09:28 AM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.