 why don't it start?, 3.2 ran fine before and now won't |
|
|
|
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. |
|
|
  |
| worn |
 Jul 28 2016, 11:06 AM
Post
#1
|
|
can't remember  Group: Members Posts: 3,156 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest 
 |
Hi folks. I have the 3.2 installed and have run it a few times. Including a few days ago. Sounded fine. A bit oily, but it has not been exercised. Now the best it will do is run way up at about the tenth try. With the gas pedal down you can keep it running for a minute or so at about 3 grand. In fact I was almost getting it to smooth running - and then it quit and would not restart. I have had a few of the high rev successes, with the motor seeming to be running on the throttle signal. No idle and then it stops. (IMG:style_emoticons/default/sad.gif)
OK it has an ecu but no error codes, and the ecu controls spark and fuel. I can hear the fuel pump running when the engine spins. I feel pretty helpless with nothing to tweak. I can go after fuel and spark, but if it isn't something like a coil, what do I do? I remember Wayne at the Bird complaining about fault finding with these motors, but I also thought they were pretty reliable. What changed? (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/wacko.gif) (IMG:style_emoticons/default/dry.gif) (IMG:style_emoticons/default/sad.gif) Helppp... again. Thanks folks. |
   |
 
|
| Shadowfax |
Jul 28 2016, 11:18 AM
Post
#2
|
|
Show us the meaning of haste Group: Members Posts: 509 Joined: 19-January 15 Member No.: 18,340 Region Association: South East States
|
A few guesses here: are you still running the single-wire CHT sensor? How is the DME relay? Fuel filter clogged?
My buddy's 1984 Carrera project had running issues and we changed the DME relay (do not get the URO brand). This helped some but what ultimately fixed his rough running was the upgraded two-wire CHT sensor and a new fuel filter. I think the sensor was probably good but the connector had almost completely disintegrated. The fuel filter had not been changed in a while...  |
|
|
|
| worn |
Jul 28 2016, 12:20 PM
Post
#3
|
|
can't remember Group: Members Posts: 3,156 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest
|
QUOTE(Shadowfax @ Jul 28 2016, 09:18 AM)  A few guesses here: are you still running the single-wire CHT sensor? How is the DME relay? Fuel filter clogged? My buddy's 1984 Carrera project had running issues and we changed the DME relay (do not get the URO brand). This helped some but what ultimately fixed his rough running was the upgraded two-wire CHT sensor and a new fuel filter. I think the sensor was probably good but the connector had almost completely disintegrated. The fuel filter had not been changed in a while... Thanks and worth keeping in mind. Of course for me everything is new except the actual motor. Turned out to be an air leak. My son found it in two minutes. You put a cork in the intake rubber and it falls out - and you forgot you had ever put the cork in because you were worried about painting the doors. Sheesh. Is there an emoticon for stupid - I would use them by the gross. (IMG:style_emoticons/default/blink.gif) |
|
|
|
| cary |
Jul 28 2016, 12:34 PM
Post
#4
|
|
Advanced Member Group: Members Posts: 3,900 Joined: 26-January 04 From: Sherwood Oregon Member No.: 1,608 Region Association: Pacific Northwest
|
Crank sensors too ....
|
|
|
|
| porschetub |
Jul 28 2016, 02:01 PM
Post
#5
|
|
Advanced Member Group: Members Posts: 4,699 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(cary @ Jul 29 2016, 06:34 AM) Crank sensors too .... (IMG:style_emoticons/default/agree.gif) ,are you getting tach needle movement on cranking ? |
|
|
|
| Shadowfax |
Jul 28 2016, 02:06 PM
Post
#6
|
|
Show us the meaning of haste Group: Members Posts: 509 Joined: 19-January 15 Member No.: 18,340 Region Association: South East States
|
QUOTE(worn @ Jul 28 2016, 01:20 PM) Thanks and worth keeping in mind. Of course for me everything is new except the actual motor. Turned out to be an air leak. My son found it in two minutes. You put a cork in the intake rubber and it falls out - and you forgot you had ever put the cork in because you were worried about painting the doors. Sheesh. Is there an emoticon for stupid - I would use them by the gross. (IMG:style_emoticons/default/blink.gif) That's good news! Love the easy - and free - fixes. (IMG:style_emoticons/default/driving.gif) |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 17th May 2024 - 04:51 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.