Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

> D-Jet troubleshooting
saigon71
post Nov 13 2009, 03:36 PM
Post #1


Senior Member
***

Group: Members
Posts: 1,999
Joined: 1-June 09
From: Dillsburg, PA
Member No.: 10,428
Region Association: MidAtlantic Region



Could use some ideas…

Background: Car sat idle in a garage for six years - 37K miles. Engine was free. 2.0 factory d-jet. I adjusted the valves, installed a new fuel filter, changed the oil & put some gas in it. It fired up but had a very high idle.

Since then, I have done the following:
-New plugs & wires
-New distributor cap, points & condenser (rotor was clean)
-New air filter
-New alternator & voltage regulator - tested good
-All new vacuum lines from AA
-New intake runner gaskets and manifold to head gaskets
-Tested all FI components except the brain. Replaced AAR and MPS with good used
ones, bench tested each before installation. MPS holds 20 in HG and electrical tests
were within limits. Replacement parts are compatible based on this site:
http://members.rennlist.com/pbanders/djetp...tm#troubleshoot
-Tested fuel pressure - dead on factory spec of 2.0 bar
-Dwell well within specs
-Set timing dead on at 27 degrees BTDC with distributor lines plugged and disty at
full advance
- TPS set according to the picture I found on this site
- New plenum to intake runner gasket
- New cold start valve gasket
- Tested PCV Valve
- Plenum inspected – no holes found
- Throttle body removed & thoroughly cleaned

At all ambient temps tested (50-70 degrees F), the car fires right up but stalls almost immediately…this happens twice. Tapping the throttle does not help. On the third start, the car stays running and idle varies between about 800-1200 RPM. After about 10 minutes, it settles in at about 950RPM or so. Besides this, the engine runs great, has plenty of power and pulls hard in all five gears. Is this as good as it gets or am I missing something. Thanks in advance.

Bob
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Posts in this topic
saigon71   D-Jet troubleshooting   Nov 13 2009, 03:36 PM
r_towle   AAR Valve... What have you dont with that Cold sta...   Nov 13 2009, 04:50 PM
saigon71   AAR Valve... What have you dont with that Cold st...   Nov 13 2009, 10:24 PM
Bruce Allert   :agree: wut he said! I had the same problem...   Nov 13 2009, 05:55 PM
jsayre914   i had a problem with the idle going back to where ...   Nov 13 2009, 06:04 PM
saigon71   i had a problem with the idle going back to where...   Nov 13 2009, 10:31 PM
Bruce Allert   I removed the decel & it was more bedda! ...   Nov 13 2009, 06:41 PM
r_towle   Here is a test. Turn key on to run...turn off. Do...   Nov 13 2009, 10:27 PM
saigon71   Here is a test. Turn key on to run...turn off. D...   Nov 13 2009, 10:35 PM
saigon71   Here is a test. Turn key on to run...turn off. D...   Nov 24 2009, 06:26 PM
Bruce Allert   Check the psi by putting a guage in line going to ...   Nov 14 2009, 12:15 AM
detoxcowboy   Check Your timming? Oscillation w/ high idle can m...   Nov 24 2009, 06:50 PM
saigon71   Check Your timming? Oscillation w/ high idle can ...   Nov 24 2009, 07:15 PM
detoxcowboy   Check Your timming? Oscillation w/ high idle can...   Nov 24 2009, 08:17 PM
r_towle   Its a vacuum canister. Remove the one or two vacuu...   Nov 24 2009, 07:21 PM
saigon71   [quote name='r_towle' date='Nov 24 200...   Nov 24 2009, 07:56 PM
r_towle   As soon as starter is not cranking the engine, ...   Nov 24 2009, 08:09 PM
detoxcowboy   How is it supposed to idle, anyway? (copied from t...   Nov 24 2009, 08:38 PM
saigon71   How is it supposed to idle, anyway? (copied from ...   Nov 29 2009, 09:53 PM
SLITS   In the D-Jet system, the operating pressure is abo...   Nov 24 2009, 10:07 PM
saigon71   In the D-Jet system, the operating pressure is ab...   Nov 29 2009, 09:39 PM


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 19th May 2024 - 08:11 PM