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BMW Diesel Owners / Enthusiasts
Do you own a diesel powered BMW? Maybe a 335d or a BMW x35d? Come and talk about what makes your car great!

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  #1  
Old 12-27-2012, 12:31 PM
cssnms cssnms is offline
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Rough cold start...

Started the car up today (it's been sitting in the cold garage for a few days) and when I hit start, the engine seemed slow to turn over. When it finally fired up the engine was very rough, in fact it shook the entire car. This lasted for about 3 or 4 seconds then it smoothed out and sounded/ran fine. No check engine lights or codes.

Anyone experience something similar?
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  #2  
Old 12-27-2012, 12:46 PM
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AutoUnion AutoUnion is offline
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Not a big deal. This can happen sometimes.

Instead of hitting start, while holding down the brake pedal, it is better to just hit the start button, wait for the glow plug light to turn off, and then fully start the car. This usually takes care of the slow turnover.
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  #3  
Old 12-27-2012, 12:51 PM
cssnms cssnms is offline
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Quote:
Originally Posted by AutoUnion View Post
Not a big deal. This can happen sometimes.

Instead of hitting start, while holding down the brake pedal, it is better to just hit the start button, wait for the glow plug light to turn off, and then fully start the car. This usually takes care of the slow turnover.
Glow plug light? I didn't even know I had one of those. Lol what does it look like?
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  #4  
Old 12-27-2012, 12:55 PM
cssnms cssnms is offline
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After reading all of the posts regarding injector failures and carbon build-up the first thing that crossed my mind was, "leaking injector" followed by "carbon build-up". It's sad I don't have more confidence in my d.
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  #5  
Old 12-27-2012, 12:58 PM
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AutoUnion AutoUnion is offline
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Quote:
Originally Posted by cssnms View Post
Glow plug light? I didn't even know I had one of those. Lol what does it look like?
You usually don't even see it, unless it's really cold out.

It comes in the little center display (the one where you see the time/temp/etc)

This is from my E70 manual


Off this video:

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  #6  
Old 12-27-2012, 12:59 PM
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Quote:
Originally Posted by cssnms View Post
After reading all of the posts regarding injector failures and carbon build-up the first thing that crossed my mind was, "leaking injector" followed by "carbon build-up". It's sad I don't have more confidence in my d.
lol, you're just being paranoid.
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  #7  
Old 12-27-2012, 02:47 PM
cssnms cssnms is offline
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Quote:
Originally Posted by AutoUnion View Post
You usually don't even see it, unless it's really cold out.

It comes in the little center display (the one where you see the time/temp/etc)

This is from my E70 manual


Off this video:

I've never seen that glow plug light on my dash once. lol

Damn that x5d starting up soundsed just like my car.

Oddly enough I've owned this car through one winter already and it never sounded like that even when starting on very cold mornings (temps in the teens)

It never got below freezing in my garage - would this cold start symptom not be unusual in this case or is this common for a diesel on occassion even if temps don't get very cold?

Another d owner mentioned this happened to his car a few times and the last time it happened the SES light went on - turned out one of this glow plugs went bad.
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  #8  
Old 12-27-2012, 03:15 PM
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floydarogers floydarogers is offline
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Quote:
Originally Posted by cssnms View Post
I've never seen that glow plug light on my dash once.
I've seen it once, perhaps twice. Both times temps around 20F or so. Very fast glow plugs compared to my Kubota.

Probably rough running was due to low cetane. 40 isn't really high enough for cold wx starts, but that's the minimum required: boo EPA.
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  #9  
Old 12-27-2012, 03:17 PM
cssnms cssnms is offline
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Well, back to Diesel Kleen w/Cetane Boost for the winter.
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  #10  
Old 12-28-2012, 06:36 AM
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Clear blue skies 85 degrees here in Puerto Rico! !!

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  #11  
Old 12-28-2012, 07:56 AM
DnA Diesel DnA Diesel is offline
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AU, wow, I've never had my D not start on the first try, and that was getting down into low -28C to -30C territory, or about -20F to -22F.

Did you have your foot on the brake for the first start try? Or were you just hitting the start button without the brake?

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D.
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  #12  
Old 12-28-2012, 04:42 PM
Snipe656 Snipe656 is offline
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Can you better define how the entire car was shaking? I am all too familiar with cold starts when bypassing glow plugs with other diesels and I'd never used that as my description for how the car was. Only times I ever had an entire vehicle shake on a cold start was when something was wrong. Now rough or shaking when immediately driving in below freezing weather is a whole other story for me.
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  #13  
Old 12-28-2012, 05:24 PM
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bimmerdiesel bimmerdiesel is offline
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It happens all time when starting in freezing temps. I and my car shiver together for first few secs.
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  #14  
Old 12-28-2012, 06:18 PM
listerone listerone is offline
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The only experience I had with my "d" in *really* cold weather was starting it at -31F after it sat for 14 hours at those temps.No fuel additives,no garage,no battery charger...just a full tank of locally blended diesel (bought the afternoon of arrival).It started like a champ but sounded and ran like a Mack truck for the first 10 minutes and only started to run entirely normally after about 20 minutes.
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  #15  
Old 12-29-2012, 06:49 AM
cssnms cssnms is offline
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Quote:
Originally Posted by DnA Diesel View Post
AU, wow, I've never had my D not start on the first try, and that was getting down into low -28C to -30C territory, or about -20F to -22F.

Did you have your foot on the brake for the first start try? Or were you just hitting the start button without the brake?

Cheers
D.
It started on the first try it was just slower to fire up. This wasn't a case where the starter just kept cranking, but rather it kinda of happened in slow motion.
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  #16  
Old 12-29-2012, 09:06 AM
DnA Diesel DnA Diesel is offline
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Quote:
Originally Posted by cssnms View Post
It started on the first try it was just slower to fire up. This wasn't a case where the starter just kept cranking, but rather it kinda of happened in slow motion.
Ah, okay. I thought I heard AutoUnion say in his video initially, "Let's see if she'll start? Nope, we'll let her warm up a bit, first."

I've never had that.

I think a lot of the start problems may be fuel quality related.

Cheers
D.
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  #17  
Old 12-29-2012, 12:10 PM
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AutoUnion AutoUnion is offline
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Quote:
Originally Posted by DnA Diesel View Post
Ah, okay. I thought I heard AutoUnion say in his video initially, "Let's see if she'll start? Nope, we'll let her warm up a bit, first."

I've never had that.

I think a lot of the start problems may be fuel quality related.

Cheers
D.
Lol, it's not my video.

I found that video on YouTube.


That being said, I left my car outside instead of the apartment garage (snow plow broke the door apparently) and my d started very similar to the video. It was about teens all night and 21F this morning. Glow piug light took a couple seconds to go off and the car shook for a couple seconds, then stopped.

I think it might be due to the fuel I got in NJ, not being completely winterized, like New England diesel is at this point in time. It might have gelled a little.
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  #18  
Old 12-29-2012, 12:11 PM
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Well, back to Diesel Kleen w/Cetane Boost for the winter.
My SA advised me against them here in the Northeast.
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  #19  
Old 12-31-2012, 07:21 AM
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Axel61 Axel61 is offline
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@AutoUnion im using AMSOIL Cetane Booster and AMSOIL Injector Cleaner and car is working extremely great. I wonder why BMW IS against this

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  #20  
Old 12-31-2012, 09:15 AM
cssnms cssnms is offline
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Quote:
Originally Posted by AutoUnion View Post
My SA advised me against them here in the Northeast.
BMW advises against any additive, not to mention I rarely put stock in what my or any SA has to say. It's DPF safe and it's proven to improve lubricity of diesel fuel and if it boost the cetane a couple of points that's a bonus.
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  #21  
Old 12-31-2012, 09:18 AM
cssnms cssnms is offline
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Took my car to the dealer for a routine service visit and not surprising the tech found nothing wrong - of course no codes to read, so the techs are at a loss. Anyway, my car has not done it since, so perhaps there was some fuel contaminents - my fuel filter does have 25k miles on it and it's due to be replaced during my next oil change in 5k miles, so perhaps it was fuel quality related.
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  #22  
Old 12-31-2012, 09:21 AM
Snipe656 Snipe656 is offline
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Originally Posted by cssnms View Post
BMW advises against any additive, not to mention I rarely put stock in what my or any SA has to say. It's DPF safe and it's proven to improve lubricity of diesel fuel and if it boost the cetane a couple of points that's a bonus.
But, but, but the SA goes to special training
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  #23  
Old 12-31-2012, 09:47 AM
cssnms cssnms is offline
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But, but, but the SA goes to special training
Some of these guys are so clueless it makes you wonder how they ever got hired.
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  #24  
Old 01-02-2013, 06:45 AM
F32Fleet F32Fleet is offline
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Some of these guys are so clueless it makes you wonder how they ever got hired.
Keeps liability claims down I suppose. None if this " My SA told me X and now my car is broke". Lol

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