 OT- Hard starting BMW, Fuel injectors? |
|
|
|
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. |
|
|
| jnp914 |
  Feb 2 2004, 10:04 AM
Post
#1
|
|
Member  Group: Members Posts: 177 Joined: 19-August 03 From: Las Vegas, NV Member No.: 1,046  |
A friend just asked for help in diagnosing his BMW:
-starts fine when cold -starts fine immediately after turning it off -impossible to start after 15 or 20 minutes -starts fine when you wait until the engine is cold To me, sounds like something in the enrichening circuit, blah blah. Any ideas? |
   |
 
|
  |
Replies
| Greg |
Feb 5 2004, 02:48 PM
Post
#2
|
|
Copper Metalic Member Group: Members Posts: 50 Joined: 14-March 03 From: Bellevue, WA Member No.: 428 |
Duckrider-
I would agree with your assesment (and I'm far from an expert on this) however, I know that these FI systems have a cold start injector that provides an extra squirt of fuel during a cold start. This is controled by a temp sensor on the block and won't allow this extra injector to opperate under warm starts. My understanding is that if the static fuel pressure drops (ie overnight) the cold start injector will mask this problem, but it becomes aparent when warm and the injector is disabled. This is just my $.02 based on where I'm at with trying to solve my own version of this problem. DR, where would you recommend checking if this isn't a fuel problem? what about the 02 sensor? Thanks! |
|
|
|
Posts in this topic
jnp914 OT- Hard starting BMW Feb 2 2004, 10:04 AM
jom had the same type of problem with my 87 325is. tur... Feb 2 2004, 11:59 AM ArtechnikA rick 918-S DuckRyder Does the oil smell like fuel? Feb 5 2004, 10:24 AM si2t3m WAG...
Does this thing have a Coolant temp sensor... Feb 5 2004, 10:35 AM DuckRyder It doesn't have a CTS at least not in the sens... Feb 5 2004, 10:50 AM crash914 My bet, intank fuel pump....or external fuel pump.... Feb 5 2004, 11:58 AM Greg My 1985 535i is experiencing the same problem. Ac... Feb 5 2004, 12:47 PM DuckRyder What makes me bet against the fuel pump and/or che... Feb 5 2004, 02:22 PM rdracrdave When I worked at BMW, we would run into this probl... Feb 5 2004, 03:38 PM
DuckRyder Your 535 is L-Jet (or motronic?) right?
320i is K... Feb 5 2004, 04:10 PM |
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th June 2024 - 04:45 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.