BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   7Post - 7 Series Forum > BMW 7-Series Forums > (F01) 7-series General Discussions

Post Reply
 
Thread Tools Search this Thread
      10-26-2012, 10:43 AM   #1
dbs600
Colonel
266
Rep
2,247
Posts

Drives: 2011 750LXi Individual
Join Date: Apr 2010
Location: New York, NY

iTrader: (0)

"Long Ignition Crank"

BIMMERPOST
     Featured on BIMMERPOST.com
My car is 2 years old, has 18,000 miles and I’ve been experiencing a “long crank” more and more often, where after I press the start button it takes the car more than 1 or 2 ignition cranks to get the engine going. Unfortunately, the problem is intermittent and presents itself, if at all, once or twice a day; usually in the morning. The dealer states they are unable to duplicate the complaint. How do I get them to reproduce or acknowledge the problem? Is any data saved on the car’s computer systems? Thanks!
Appreciate 0
      10-27-2012, 12:09 AM   #2
filmoreslim
New Member
0
Rep
19
Posts

Drives: 2010 535i xDrive Sports Wagon
Join Date: Jun 2012
Location: San Francisco

iTrader: (0)

Quote:
Originally Posted by dbs600
My car is 2 years old, has 18,000 miles and Ive been experiencing a long crank more and more often, where after I press the start button it takes the car more than 1 or 2 ignition cranks to get the engine going. Unfortunately, the problem is intermittent and presents itself, if at all, once or twice a day; usually in the morning. The dealer states they are unable to duplicate the complaint. How do I get them to reproduce or acknowledge the problem? Is any data saved on the cars computer systems? Thanks!
Somebody posted on another blog that BMW service techs at a dealership in Las Vegas identified this as a fuel pressure issue where the fuel line loses pressure when idle...I think you posted there...fuel pressure regulator needs to be replaced.
Appreciate 0
      10-27-2012, 12:20 AM   #3
dbs600
Colonel
266
Rep
2,247
Posts

Drives: 2011 750LXi Individual
Join Date: Apr 2010
Location: New York, NY

iTrader: (0)

Thanks, but any thoughts on how to reproduce it?
Appreciate 0
      10-27-2012, 12:38 PM   #4
BMWrules7
Lieutenant Colonel
306
Rep
1,684
Posts

Drives: 2015, 740 LdX, Alpine White
Join Date: Mar 2011
Location: Boston Area

iTrader: (0)

Quote:
Originally Posted by dbs600
My car is 2 years old, has 18,000 miles and Ive been experiencing a long crank more and more often, where after I press the start button it takes the car more than 1 or 2 ignition cranks to get the engine going. Unfortunately, the problem is intermittent and presents itself, if at all, once or twice a day; usually in the morning. The dealer states they are unable to duplicate the complaint. How do I get them to reproduce or acknowledge the problem? Is any data saved on the cars computer systems? Thanks!
Take a video that shows the tach and the start button in the same frame.

Then count aloud on the recording:

3..2..1...start.

Then keep focused on the tach.

When you encounter the problem, show the normal video and then the video with the long start.

Typically, the tach will become stabilized when the engine has started. If you have the ability to display a timestamp on the video then that would be best.
Appreciate 0
      10-27-2012, 02:23 PM   #5
filmoreslim
New Member
0
Rep
19
Posts

Drives: 2010 535i xDrive Sports Wagon
Join Date: Jun 2012
Location: San Francisco

iTrader: (0)

Leave it overnight...if its a common occurrence the fuel pressure should drop if it sits10-12 hours.
Appreciate 0
      10-27-2012, 05:06 PM   #6
freshwhite335
Colonel
freshwhite335's Avatar
United_States
146
Rep
2,882
Posts

Drives: 991/RR Sport AB
Join Date: Aug 2008
Location: 904 FL

iTrader: (6)

Garage List
2011 BMW 135i  [0.00]
Had the same problem on our 09. Found it to be fuel pump issue.
__________________
2014 Range Rover Sport Autobiography
2012.5 991 C2S
1978 Corvette
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 10:58 AM.




7post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST