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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > DFFF -- Dont Fear the Fuel Filter



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      02-19-2013, 09:16 AM   #23
rogerdiaz
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Quote:
Originally Posted by Quasimodem View Post
see attached photo.
Awesome detail. Thanks for your time. $200.56 at my local stealership to replace.

Last edited by rogerdiaz; 02-19-2013 at 10:03 AM.
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      03-01-2013, 02:37 AM   #24
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Quote:
Originally Posted by Quasimodem View Post
see attached photo.
Instead of cutting, you can just grab the crushed part of the clamp with a pliers and twist. It will break apart.

-Michael
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      03-01-2013, 03:54 AM   #25
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Quote:
Originally Posted by rogerdiaz View Post
Awesome detail. Thanks for your time. $200.56 at my local stealership to replace.
Make sure you figure out how to prime the pump if you do this. Draining the system will cause a significant air bubble in the fuel system which will not be good for the HPFP.
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      06-26-2013, 02:56 PM   #26
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Quote:
Originally Posted by bdwyer View Post
What is the proper priming procedure? I know on a typical diesel injector pump there is a priming lever.
Nvm, I think I found the answer to this question. For all other owners out there, this is the procedure from the workshop manual.

Venting fuel system:

Turn on ignition and leave on for approx. 1 minute. In this
period of time, the fuel pre-supply pump is activated and the
fuel line to the H.P. pump vented.
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      06-26-2013, 05:11 PM   #27
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Quote:
Originally Posted by bdwyer View Post
Nvm, I think I found the answer to this question. For all other owners out there, this is the procedure from the workshop manual.

Venting fuel system:

Turn on ignition and leave on for approx. 1 minute. In this
period of time, the fuel pre-supply pump is activated and the
fuel line to the H.P. pump vented.
That process didn't work on my 2011. See earlier post #7

http://www.e90post.com/forums/showpo...15&postcount=7
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      06-26-2013, 06:54 PM   #28
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how could the lift pump possibly not be set to prime any time that the car is turned on? That would make it different from every other car in the world
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      06-26-2013, 07:40 PM   #29
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Quote:
Originally Posted by Hoooper View Post
how could the lift pump possibly not be set to prime any time that the car is turned on? That would make it different from every other car in the world
Well, here it is up the lift doing a fuel filter change. No fuel flows when trying the above method. But using the BT tool to initiate the lift pump made the fuel flow.

http://www.bimmerfest.com/forums/sho...d.php?t=657530

My 2004 Ram Cummins, 2001 VW TDI, 2006 Liberty CRD didn't initiate a lift pump either when turning the vehicle on ...
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      06-26-2013, 08:47 PM   #30
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Must be a diesel thing. Makes no sense to me but
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      06-26-2013, 09:15 PM   #31
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Quote:
Originally Posted by Hoooper View Post
Must be a diesel thing. Makes no sense to me but
Well, those vehicles didn't even have lift pumps :-) Just used the injection pump to "pull" the fuel from the tank. I ended up adding lift pumps to all of them though...
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      06-26-2013, 09:24 PM   #32
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I wonder if there is a way to hotwire/hijack the lift pump to get a prime, for those of us who arent using a BT tool
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      06-27-2013, 04:54 PM   #33
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Quote:
Originally Posted by TDIwyse View Post
That process didn't work on my 2011. See earlier post #7

http://www.e90post.com/forums/showpo...15&postcount=7
Didn't work for me either. I left the engine feed side of the filter disconnected and tried this expecting fuel to begin spewing after a few seconds. It never happened.

Worst comes to worst, I would suggest everyone at the very least pinch the line feeding the engine with a set of locking pliers before completely slipping it off the supply side of the filter.

My 2011 fired up after about 15 seconds of cranking after replacing the filter.
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      06-27-2013, 05:20 PM   #34
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Quote:
Originally Posted by bdwyer View Post
Didn't work for me either. I left the engine feed side of the filter disconnected and tried this expecting fuel to begin spewing after a few seconds. It never happened.

Worst comes to worst, I would suggest everyone at the very least pinch the line feeding the engine with a set of locking pliers before completely slipping it off the supply side of the filter.

My 2011 fired up after about 15 seconds of cranking after replacing the filter.
ouch. was that with or without the locking pliers method?

I wonder if it would be possible to manually pump the fuel up with a hand pump connected to the engine side of the filter? At least then you would have the filter and line up to it full. If you successfully pinched the line to the engine there would be only a very small air pocket
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      06-27-2013, 07:02 PM   #35
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Anyone know if INPA software can active the fuel pump?
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      06-28-2013, 04:08 PM   #36
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Quote:
Originally Posted by Hoooper View Post
ouch. was that with or without the locking pliers method?
That was 'sort of' with the pliers. I came up with the idea after pulling the hose off and seeing that it was draining. I quickly put the hose back on the filter and got the pliers. After doing it with this method, it fired up after cranking for about 4-5 seconds then stalled. After that I let it sit for a minute, and it probably cranked for another 5 seconds, fired up and I let it idle for 10 minutes.

I would imagine that one could probably take some diesel and prefill the filter, although you'd make a mess. I think air in the lines is unavoidable in this situation. I'm amazed that this thing has the ability to self vent though, a typical diesel injector pump wouldn't take well to this situation. It would require a priming. I still don't understand why the documented procedure didn't work, I guess its for a different year. Rear pump never activated with ignition on and engine off.
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      07-08-2013, 10:13 PM   #37
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Anyone know if an official repair/service document exists that tells how exactly to remove air from fuel system?
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      07-30-2013, 03:51 AM   #38
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Which is the size of fuel hose?
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      08-01-2013, 01:13 PM   #39
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how often are you guys changing your filters? I used to do the 1 on my 04 TDI every 20k miles as per the book.
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      08-28-2013, 12:05 PM   #40
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Quote:
Originally Posted by TDIwyse View Post
Thanks for posting the pics!

When I changed the filter, and also when installing the 2um Stanadyne Fuel Manager final filter setup, I had to use the BT tool to energize the low pressure fuel pump to flush/prime the system. The Start/Stop button did not work for me. I'd highly suggest you prime the system to get fuel (the lubrication) to the HPFP before trying to start the car, for the long term health of your HPFP.

How to use the BT to initiate the low pressure fuel pump:

http://www.bimmerfest.com/forums/sho...3&postcount=27

"However, if you were to, say, use a BT (www.bavariantechnic.com/) then you could go under the Fuel Pump menu to the Activation sub menu and turn on/off the in tank lift pump. The fact that he wrote “may take a few cranks
” to start his engine makes me believe he wasn’t, in fact, initiating the lift pump like he thought. I think this because for, some reason, I know that if you cycle the lift pump with the BT then the engine will fire up as fast as normal.
"
TDI, I emailed BT and they seem to think that the tool may have limited communication with my 2011 335d. What year is your ride and have you noticed any limitations with the tool? Thanks!
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      08-28-2013, 01:44 PM   #41
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I remember reading some time ago that the systems prime themselves when the car is unlocked after it had been locked for X amount of time. Wouldn't this prime/vent the pump?


Btw. BT supposedly doesn't fully support 2010 MY to Present.
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      08-28-2013, 03:45 PM   #42
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it doesnt fully support the 2010+ e9x cars, and it doesnt have full support for the m57. I have used the N57 module successfully for the most part but I suspect if an M57 module comes out it will be better. Some of the other modules and settings that the BT is a nice tool for also dont work. For the most part though it is "compatible" for the functions you would want.

For instance, I can reset the service interval for oil change, but I cant reset the interval for brake fluid change. Its just random strange things like that. I havent found any engine parameters I would expect to have access to that I dont.
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      09-12-2013, 02:17 PM   #43
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Found this info as I was getting ready to do this myself. Instruction says just to turn the ignition on for 1 minute to vent. According to the website, only the N47 and N47S engine need diagnostic tester to vent the fuel system.
http://bmw.workshop-manuals.com/3_Se...dex.php?id=485
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      09-12-2013, 08:11 PM   #44
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Quote:
Originally Posted by chau View Post
Found this info as I was getting ready to do this myself. Instruction says just to turn the ignition on for 1 minute to vent. According to the website, only the N47 and N47S engine need diagnostic tester to vent the fuel system.
http://bmw.workshop-manuals.com/3_Se...dex.php?id=485
Awesome link!
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