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      11-26-2018, 11:12 AM   #1
kdog_x
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N47 Fuel Pump Campaign

Does anyone know if BMW actually released an updated fuel pump on the F30 diesels? I did receive the letter in the mail advising that there would be an extension of warranty on my vehicle to 10yrs / 120,000 miles for the pump, but it doesn't sound like they will replace anything unless it implodes. I'm currently rolling past the 100k mile marker so I'm wondering if this is something that should be replaced proactively just prior to the 120k mark to avoid a $10k repair job.

I saw the write up on here about replacing the unit with part #16117243975. RealOEM shows this part as being in use from 11/4/2014, so not sure if this is the same part indicated in the recall letter or if this is an updated model. It doesn't look like it's too difficult a job, if $200 worth of parts / tools prevents $10k in damage it seems like a no brainer.
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      11-26-2018, 01:53 PM   #2
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Quote:
Originally Posted by kdog_x View Post
Slight correction, looks like it's more of a $500 job. The writeup has the part listed at $90... not sure if they marked it up since then or what but it looks to be closer to $375 for the fuel pump, plus $125 for the tank cap removal tool.

Curious if you could replace just the pump instead of replacing the entire module? Looks like the pump was replaceable separately on 2013 and older models. Not sure why it's only offered as an assembly from 2014+
Looks like previous revision part #'s include:
16117297778
16117414482

Not sure if you can just replace the pump all I see online as it being sold as an assembly, and without having the part physically in front of me I cannot see how it is attached.

Thankfully this looks like any other Honda fuel pump replacement in regards to ease of installation and being under the rear seat (and not having to drop the fuel tank etc)

But based on photos it looks like any other walbro pump so you can risk just buying a new unit (seeing how it's attached & what fuel pump is on it) then return the product unused. Just an idea I guess.

edit: also I don't even think that tool is necessary. It looks like your average lock ring that is removed by twisting counter clockwise, you can probably get away using a flat head and rotating it like every other car with that design.
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      11-26-2018, 02:32 PM   #3
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I've removed those rings before with a brass punch (avoids sparks). Although, being diesel I wouldn't think that would be as much of an issue compared to gasoline. But, I agree that the special tool is likely not necessary.

Looking at the used modules that are for sale I see that they use that corrugated fuel proof hose on the pump. This generally is glued or molded into place on the pump outlet, so that may be an issue if you just wanted to replace the pump, since the hose can't be reattached.

Swapping the pump for a walbro seems like it would be an option. I did this on my old GTO many years back... It involved pulling the bucket apart, swapping the pumps, and then you needed to splice the power wires in and replace the feed line with some submersible gates fuel line and stainless clamps. Not sure if the crazy computer system on this car would play ball with he new pump if you did this though lol. Sizing the pump may also require some research unless the stock output is known.
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      11-26-2018, 02:34 PM   #4
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Wasn't the warranty extension on the high pressure fuel pump?

Or is the in tank pump something new I am not (yet) aware of?
The fuel that comes from the in tank fuel pump is filtered, so even if it fails, you wouldn't get system damage.
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      11-26-2018, 02:49 PM   #5
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Quote:
Originally Posted by Enabled View Post
Wasn't the warranty extension on the high pressure fuel pump?

Or is the in tank pump something new I am not (yet) aware of?
The fuel that comes from the in tank fuel pump is filtered, so even if it fails, you wouldn't get system damage.
Haha, I think you are right. I didn't realize there were two pumps.

Man, looks like the HPFP is $1200... that's a little more painful to do as a maintenance item!!
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      11-28-2018, 02:38 PM   #6
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After looking into this a little more, the current BMW part # is 13518597819 which lists for about $1200 from the stealership. I was able to determine that the actual bosch # for this pump is 0445010553. If you search under this number, or the alternate #0445010517 (which appears to be the same part) the pump can be sourced new from Germany for about $600, or refurbished for around $450. Still rather pricy, but maybe something to consider if nearing the 120,000 warranty cutoff

Not sure if they did upgrade something over the original pumps though, very curious if one of the" disaster prevention kits" they sell for the diesel trucks could be modified to work on the BMW
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      11-28-2018, 07:37 PM   #7
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Quote:
Originally Posted by kdog_x View Post
After looking into this a little more, the current BMW part # is 13518597819 which lists for about $1200 from the stealership. I was able to determine that the actual bosch # for this pump is 0445010553. If you search under this number, or the alternate #0445010517 (which appears to be the same part) the pump can be sourced new from Germany for about $600, or refurbished for around $450. Still rather pricy, but maybe something to consider if nearing the 120,000 warranty cutoff

Not sure if they did upgrade something over the original pumps though, very curious if one of the" disaster prevention kits" they sell for the diesel trucks could be modified to work on the BMW
is this pump only, or do you mean the whole assembly?
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      11-28-2018, 07:47 PM   #8
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From the pictures I've seen it appears to be the whole pump assembly with the flow control valve attached. Not sure what else is required for a complete assembly, but it looks like it would be ready to drop in. If you copy and paste those numbers into eBay, it looks like there's actually a few vendors, the Best prices on the new part appears to be $570 from Germany

Here is the video that describes how the pump fails and destroys the system, and shows what the bypass does...

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      11-29-2018, 09:23 AM   #9
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There is a great thread here that shows the CP4.1 pump and the CP4.2 pump being completely disassembled. It almost looks like you could swap in a 4.2 pump in place of our 4.1 pump. There are bypass kits for the 4.2, I have not seen any for the 4.1 pump, which is what we have on the 2.0 BMW's. On the diesel trucks the block off plate is installed inside the pump and then the return line to the fuel tank is cut and connected to the bypass kit.

http://forums.tdiclub.com/showthread.php?t=387252
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      11-29-2018, 10:43 AM   #10
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After reviewing the Bentley manual it's worth mentioning that you should not just go and pop the pump out in an attempt to replace it. The pump sprocket is timed to the timing chain, and if you were to pull the pump out you will being removing the engine afterwards to get the timing back in sync. There is a special tool set that is about $150 which holds the sprocket in place whilst the pump itself is removed.

So it doesn't seem like there is much of a solution for high mileage BMW owners at present. It's either you procatively spend $600 for a pump plus $150 in special tools to install it, which begs the question... what did they update when Bosch changed from PN "0986437424" to "0445010517" in August 2015? And does it mitigate the issue of the pump failures? Or you just have a ticking time bomb under the hood, with the potential to cause $10,000 in damage.

VW is offering an unlimited mile / 2year warranty on all of their CPO TDI's... I'm strongly considering giving this car the boot and going back over to VW. It will probably take me about another 6 months to hit the 120k mark, so I suppose I will cross my fingers and hope BMW decides to recall or that the pumps come down in cost by then.

Last edited by kdog_x; 11-29-2018 at 11:09 AM..
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      03-08-2019, 09:13 PM   #11
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Quote:
Originally Posted by kdog_x View Post
After reviewing the Bentley manual it's worth mentioning that you should not just go and pop the pump out in an attempt to replace it. The pump sprocket is timed to the timing chain, and if you were to pull the pump out you will being removing the engine afterwards to get the timing back in sync. There is a special tool set that is about $150 which holds the sprocket in place whilst the pump itself is removed.

So it doesn't seem like there is much of a solution for high mileage BMW owners at present. It's either you procatively spend $600 for a pump plus $150 in special tools to install it, which begs the question... what did they update when Bosch changed from PN "0986437424" to "0445010517" in August 2015? And does it mitigate the issue of the pump failures? Or you just have a ticking time bomb under the hood, with the potential to cause $10,000 in damage.

VW is offering an unlimited mile / 2year warranty on all of their CPO TDI's... I'm strongly considering giving this car the boot and going back over to VW. It will probably take me about another 6 months to hit the 120k mark, so I suppose I will cross my fingers and hope BMW decides to recall or that the pumps come down in cost by then.
This is true.... you do not want to remove the pump without the special tools. The pump isn't all that hard to replace. It calls for removing the intake manifold, but it can be done without. I've done a bunch this way.

I'm still amazed BMW hasn't recalled these earlier N47/N57 pumps. We're a small town dealer, and we get one towed in every couple months it seems. I can't say I remember any 9/15+ (2016 model year+) failing, but I'm not totally sure. This is something that has probably been fixed in production, but we've never heard anything official on it.

The cost to fix is one thing, the potential safety issues from the engine stalling is another. Plus, we've seen at least two engines need to be replaced because the pump seized and stripped out the drive lug for the pump, or broke the timing chain.

I tell anyone who wants an honest opinion to stay away from any BMW diesel. The benefits don't outweigh the added costs and/or headaches in my opinion. No offense intended to any owners here.
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      06-07-2019, 07:07 PM   #12
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CP4.1 bypass

Quote:
Originally Posted by kdog_x View Post
There is a great thread here that shows the CP4.1 pump and the CP4.2 pump being completely disassembled. It almost looks like you could swap in a 4.2 pump in place of our 4.1 pump. There are bypass kits for the 4.2, I have not seen any for the 4.1 pump, which is what we have on the 2.0 BMW's. On the diesel trucks the block off plate is installed inside the pump and then the return line to the fuel tank is cut and connected to the bypass kit.

http://forums.tdiclub.com/showthread.php?t=387252
Maybe we should get a bunch of people together and encourage S&S or ED make a 4.1 bypass kit?

We don't have the hard fuel lines so it might be easier to install.

https://ssdiesel.com/shop/all/ford-6...pass-kit-2011/
http://www.engineered-diesel.com/cp4...werstroke-6-7l
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      06-08-2019, 05:26 PM   #13
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Definately would be interested in a bypass filter. Would be nice to have something like the 2micron filter that was created for the VW cp4 pumps.
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      06-12-2019, 02:35 PM   #14
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I would do bypass if it would save me from having to do a SECOND full fuel system replacement. Particularly as my mileage goes up and this might be on my dime in the future.
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      06-12-2019, 04:03 PM   #15
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S&S Diesel replied to me that they would put a CP4.1 bypass kit on their list of things-to-do. Let's keep our eyes peeled or drop them additional "encouragement".

I don't know what the "2micron" kit does, but kdog posted exactly what the S&S would do.
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      06-12-2019, 08:39 PM   #16
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As long as the cost is fairly reasonable it would be a 'must have' for any diesel 328 owners past their warranty, which is a growing number daily. If the stealership will only cover the pump price in the face of 10k worth of damage (although this may be a case by case decision), it would be cheap insurance. If I could install a bypass I would have certainly bought that vs a new pump. Once the bypass is installed a pump failure becomes more of a minor headache rather than a catastrophe.
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      06-13-2019, 07:29 PM   #17
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FWIW, a different take on pump failures.
https://pocketmags.com/us/diesel-wor...he-cp4-2-fails
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      06-14-2019, 08:21 AM   #18
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Quote:
Originally Posted by catskillclimber View Post
FWIW, a different take on pump failures.
https://pocketmags.com/us/diesel-wor...he-cp4-2-fails
Interesting. I didn't buy the article, but from the hints I would say they're attributing the failures to improperly installed fuel filter (allowing an air leak), not purging the system after installing a filter, deferred filter maintenance clogging and starving the engine (change your filters boys and girls!), and running the vehicle low enough on fuel to suck in some air. All of which could certainly seem plausible, though I'd still bet there are failures where none of these things happened, and the lack of any fail safe still makes it a poor design .
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      06-14-2019, 10:44 AM   #19
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Quote:
Originally Posted by catskillclimber View Post
FWIW, a different take on pump failures.
https://pocketmags.com/us/diesel-wor...he-cp4-2-fails
Very, very interesting. My fuel pump was replaced 7k prior to my fuel pump blowing up... With how bad that clip is I wonder if it wasn't put back correctly? Does anyone know if aeration can really cause this pump to fail?
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      06-14-2019, 11:07 AM   #20
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Ford & GM diesel truck owners have plenty of bad history with Bosch HPFP failures leading to many lawsuits. Lack of a lift pump in both of them was a common failure mode culprit. I've not come across anything definitive pointing to one particular reason for failure. All the reasons identified have the potential to encourage metal to metal contact.

Good fuel, filter changes, & lubricity additive seem to be the only proactive items we can implement. Filter changes every 4th oil change or ~40k miles seem excessively long. Duramax engines intervals range from 15k - 20k miles. A filter change is the one item I have the BMW dealer perform, never know when that record might come in handy.

I wonder if l letting the lift pump run prior to starting would help. Nothing to lose except the 10-15sec prior to engine start.
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      06-14-2019, 09:08 PM   #21
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Quote:
Originally Posted by kdog_x View Post
After looking into this a little more, the current BMW part # is 13518597819 which lists for about $1200 from the stealership. I was able to determine that the actual bosch # for this pump is 0445010553. If you search under this number, or the alternate #0445010517 (which appears to be the same part) the pump can be sourced new from Germany for about $600, or refurbished for around $450. Still rather pricy, but maybe something to consider if nearing the 120,000 warranty cutoff

Not sure if they did upgrade something over the original pumps though, very curious if one of the" disaster prevention kits" they sell for the diesel trucks could be modified to work on the BMW
7810696 version 12 as in that ebay ad is the June 4th 2014 design revision on the pump.
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      06-15-2019, 05:15 PM   #22
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Anyone who has replaced the hpfp, is the bolt that holds the cam sprocket to the hpfp reverse thread? The only ratchet that fits back there is my little 1/4 drive, but I cranked on it pretty good and cant seem to get it to come loose. Just want to confirm I'm going the right way
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