Long crank time--Is this normal?? - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 10-06-2003, 09:21 PM
n00b
 
Join Date: Sep 2003
Location: Pasadena, CA
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
dan90rs is an unknown quantity at this point
Send a message via Yahoo to dan90rs
(Thread Starter)
Ok, I went and checked out that '89 325i today. It's got a few small problems but nothing that big except the gauge cluster is probably bunk. It ran strong.

But my #1 concern is the crank time. It took about 5-8 seconds to start up...is this normal?? I only have experience with GM cars and GM cars prime the fuel pump when the key is turned to RUN to avoid long crank times. Do these cars not build fuel pressure until the key is turned to START?? Is this a fuel pump problem? The car ran fine once it started.

Dan
1989 325i
dan90rs is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 10-06-2003, 09:45 PM
Neutral Member
 
Join Date: Sep 2003
Posts: 68
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
BlitZeD310 is an unknown quantity at this point
It could be many things such as timing, air aux. valve, cold start injector. I would do some test to narrow it down, check the timing, undue the air aux valve to see if it is open while the motor is cold, if it is closed while the motor is cold it may be bad, also check the cold start injector to see if it gives off a fine spray of fuel during the ignition process, you can do this by unbolting it and putting it in a cup and start the car, if it sprays you are good to go. But since this is not your car I wouldn't worry to much seems like a minor problem that can be sorted out with out that much time and $$$, either way just my $0.02 I'm sure others may know the problem...Good Luck

<img src='http://e21.tricord.cjb.net/members/cjpix/bim1_050204.jpg' border='0' alt='user posted image' />
BlitZeD310 is offline  
#3 (permalink) Old 10-06-2003, 09:48 PM
You Can Has A Custom Title!!
 
Join Date: Dec 2002
Location: Houston
Posts: 2,053
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
MrM3 is an unknown quantity at this point
Send a message via AIM to MrM3
i dont know what the problem could be, but that deffinately isnt normal. ive had my car start in under a second, but normally it takes around 3sec
MrM3 is offline  
#4 (permalink) Old 10-06-2003, 09:55 PM
n00b
 
Join Date: Sep 2003
Location: Pasadena, CA
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
dan90rs is an unknown quantity at this point
Send a message via Yahoo to dan90rs
(Thread Starter)
Thanks for the quick replies. I'm probably going to buy this car so it will become my problem. Hopefully it is something easy like the cold start injector.

Anybody know where I can decode a VIN???

Dan
1989 325i
dan90rs is offline  
#5 (permalink) Old 10-06-2003, 11:16 PM
You Can Has A Custom Title!!
 
Join Date: Dec 2002
Location: Houston
Posts: 2,053
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
MrM3 is an unknown quantity at this point
Send a message via AIM to MrM3
Quote:
Originally posted by dan90rs@Oct 6 2003, 10:35 PM


Anybody know where I can decode a VIN???
you can use carfax to check the vehicles history, or you can use this: http://www.bmw-z1.com/VIN/VINdecode-e.cgi to just get some general info
MrM3 is offline  
#6 (permalink) Old 10-07-2003, 02:26 AM
n00b
 
Join Date: Sep 2003
Location: Pasadena, CA
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
dan90rs is an unknown quantity at this point
Send a message via Yahoo to dan90rs
(Thread Starter)
Thanks MrM3. I just ran a CARFAX and everything came up clean.

Dan
1989 325i
dan90rs is offline  
#7 (permalink) Old 10-07-2003, 10:27 AM
Fox
Moderator
 
Join Date: Apr 2003
Location: Florida
Posts: 1,637
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Fox is an unknown quantity at this point
Stop. Before you do anything else or get crazy about this, replace your fuel filter. if this doesnt fix it pull out your spark plugs and make sure they are clean and properly gapped .7 mm

Lastly if neither of these work try some fuel injector cleaner, not to clean the injectors but the fuel lines and filters. If none of this works then think about something more drastic.

<span style='font-family:Geneva'><span style='font-size:14pt;line-height:100%'><span style='color:red'>Fox</span></span> <span style='color:gray'>the Pirate</span>
Diplomacy is saying &quot;nice doggy&quot; until you find a rock.</span>

I live my life one quarter mile at a time, and for those 23 or more seconds I'm free.
Fox is offline  
#8 (permalink) Old 10-07-2003, 10:41 AM
1st Gear Member
 
Join Date: Oct 2003
Posts: 114
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hamann 325i is an unknown quantity at this point
yeah i did that to mine and it ran fine
Hamann 325i is offline  
#9 (permalink) Old 10-26-2003, 12:49 AM
1st Gear Member
 
Join Date: Oct 2003
Location: Kansas City, MO USA
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
KC Ron Carter is an unknown quantity at this point
Fuel pump check valve.


I could replaced the fuel pump for $200 but I fixed the problem by putting in the fix from BMW for about $3.50,
part # "16 14 9 068 988"

Now the engine starts on first turn, hot or cold, overnight or after
standing for a while.

Diagnosis:

The check valve in the main fuel pump was leaking allowing the fuel injector rail residual pressure to bleed off resulting in formation of a huge fuel vapor bubble in the fuel rail and back down the fuel line toward the pump.

The extra cranking time was needed by the fuel pump to recompress and
eliminate the fuel vapor bubble in the line and repressurize the fuel injector rail.

Installation can be anywhere in the fuel pressure line but next to the main pressure pump is best.

It is a two screw clamp job.

Later,
KC Ron Carter is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E21, E30)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Long overdue maintenance... Any help? Darryl Roederer 3-Series (E36) 3 12-25-2003 02:46 PM
Setting the time. Hi-psi 3-Series (E36) 6 04-20-2003 01:17 AM

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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome