 Suddeny it wont run, This car is getting the better of me |
|
|
|
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. |
|
|
  |
| DRPHIL914 |
 Jun 15 2015, 12:33 PM
Post
#21
|
|
Dr. Phil  Group: Members Posts: 5,830 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States 
 |
QUOTE(DavidSweden @ Jun 15 2015, 02:15 PM)  QUOTE(Spoke @ Jun 15 2015, 10:11 AM) You can check for a stuck cold start injector. That could cause a very rich mixture. Thanks, I did take a piece of tubing attached it to the cold start valve and blew down it to see if it was open (ignition off) is this the correct procedure? that sounds like the AAR valve not the cold start valve- the cold start valve is an additional injector that is mounted to the plenum and injects extra fuel to increase richness when really cold , i think you are blowing into the AAR and that should be closed when warmed up, but would cause a high idle if stuck open . it would not cause you to have the sx you are talking about. |
   |
 
|
| DavidSweden |
Jun 15 2015, 12:38 PM
Post
#22
|
|
Member Group: Members Posts: 481 Joined: 8-June 14 From: Sweden Member No.: 17,452 Region Association: Scandinavia |
QUOTE(larss @ Jun 15 2015, 10:32 AM) QUOTE(DavidSweden @ Jun 13 2015, 06:18 PM) ...Whats the best way to check the fuel pressure... On the steel fuel line between the injectors on one side there is a T-tube with a small bolt at the end, just undo the bolt an hook up a pressure gauge on it and make the pump running. /Lars S Lars, tack för svaret men jag fattar inte riktigt vad du menar, kan du ta det på Svenska istället. Yes this is Swedish |
|
|
|
| 914_teener |
Jun 15 2015, 12:43 PM
Post
#23
|
|
914 Guru Group: Members Posts: 5,266 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
QUOTE(DavidSweden @ Jun 15 2015, 10:58 AM) QUOTE(Jeff Bowlsby @ Jun 15 2015, 09:53 AM) Does the MPS hold vacuum? I hope so Jeff it was you who rebuilt it about 2 months ago. I will check and let you know (IMG:style_emoticons/default/blink.gif) (IMG:style_emoticons/default/agree.gif) Things to perhaps consider: 1. Valves are set correctly? 2. Harness at the ECU is seated correctly. 3. All harness connections check out including grounds, clean ect. I don't know Sweedish but the "fatter" word looks familiar (IMG:style_emoticons/default/laugh.gif) Hope this helps. Hang in there. |
|
|
|
| cpavlenko |
Jun 15 2015, 12:45 PM
Post
#24
|
|
Member Group: Members Posts: 489 Joined: 19-April 12 From: North Arizona Member No.: 14,400 Region Association: Southwest Region |
What's cht, just wondering. Trying to keep up on the slang. I find a lot on this site. Me old man, trying to figure it out. Is there somewhere I can find what all the letter slang stands for in this forum. (IMG:style_emoticons/default/blink.gif)
|
|
|
|
| larss |
Jun 15 2015, 12:46 PM
Post
#25
|
|
Member Group: Members Posts: 431 Joined: 10-September 09 From: Sweden Member No.: 10,787 Region Association: Scandinavia |
QUOTE(DavidSweden @ Jun 15 2015, 07:38 PM) QUOTE(larss @ Jun 15 2015, 10:32 AM) QUOTE(DavidSweden @ Jun 13 2015, 06:18 PM) ...Whats the best way to check the fuel pressure... On the steel fuel line between the injectors on one side there is a T-tube with a small bolt at the end, just undo the bolt an hook up a pressure gauge on it and make the pump running. /Lars S Lars, tack för svaret men jag fattar inte riktigt vad du menar, kan du ta det på Svenska istället. Yes this is Swedish No I refuse Swedish (IMG:style_emoticons/default/biggrin.gif) See no 86 in this picture, the small nipple in the middle of that tube, thats where you connect the pressure meter. It might be on either side of the engine. /Lars S (IMG:http://www.914world.com/bbs2/uploads_offsite/images.thesamba.com-10787-1434393969.1.jpg) |
|
|
|
| DavidSweden |
Jun 15 2015, 12:50 PM
Post
#26
|
|
Member Group: Members Posts: 481 Joined: 8-June 14 From: Sweden Member No.: 17,452 Region Association: Scandinavia |
Lars the pump is running I have just over 28 psi |
|
|
|
| larss |
Jun 15 2015, 12:51 PM
Post
#27
|
|
Member Group: Members Posts: 431 Joined: 10-September 09 From: Sweden Member No.: 10,787 Region Association: Scandinavia |
You wrote in the 1st post that it was misfiring, if not ignition causing it, to me that is running wery lean and not rich... so checking fuel pressure is not a bad idea...
/Lars S |
|
|
|
| larss |
Jun 15 2015, 12:52 PM
Post
#28
|
|
Member Group: Members Posts: 431 Joined: 10-September 09 From: Sweden Member No.: 10,787 Region Association: Scandinavia |
QUOTE(DavidSweden @ Jun 15 2015, 07:50 PM) Lars the pump is running I have just over 28 psi Thats perfect! /Lars S |
|
|
|
| larss |
Jun 15 2015, 12:53 PM
Post
#29
|
|
Member Group: Members Posts: 431 Joined: 10-September 09 From: Sweden Member No.: 10,787 Region Association: Scandinavia |
For how long have you been driving the car without problems, was this the first test run or...?
/lars S |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 11th July 2025 - 09:17 PM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.