Fuel filter change

Tiny
SALVA7ORE
  • MEMBER
  • 2012 BMW 520
  • 2.0L
  • 2WD
  • AUTOMATIC
  • 82,000 MILES
Hi, hope you can help me. Bought an F10 last year. Probably the fuel filter has never been changed. The car is running fine but I want to have a go at changing it anyway as I will also be changing the engine oil and filter. My question is, do I need to disconnect a fuse that controls the fuel flow before removing the fuel filter? If so, which is the fuse? This is a 520d f10 reg 62. Advance thanks. Sal
Wednesday, November 4th, 2020 AT 3:04 PM

13 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
You do not need to remove the fuse. Just make sure you have the new filter connected before you cycle the key. There will be some pressure in the line so just wrap a rag around the first line that you remove and then you will be fine until the new filter is installed.

Here is the process for this from the manual. Let us know what questions you have. Thanks
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Wednesday, November 4th, 2020 AT 3:37 PM
Tiny
STEVE W.
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You shouldn't need to disconnect the fuse, you just need to be careful when you start to remove the filter so you can relieve the pressure there. You will get some fuel out as well so it is best to have the other filter right there and ready to go in. Then once it's replaced you will want to cycle the key a few times and then start the engine to purge the system of air.
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Wednesday, November 4th, 2020 AT 3:46 PM
Tiny
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Thank you both for taking the time to respond. Am not sure what is meant by cycling the key a couple of times before starting the car off again after installation is complete. New cars have automatic start button. Will it just be sufficient to push the start button without foot on the break? Thank you
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Thursday, November 5th, 2020 AT 12:36 AM
Tiny
STEVE W.
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Okay, with a push button you can step on the brake and try to start it. It may take a couple tries as it purges the air out.
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Thursday, November 5th, 2020 AT 7:20 AM
Tiny
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Steve is correct. It has what a system that will crank the engine about 10 times and stop if it doesn’t start.

However if you want to “cycle” the key do as you said. Don’t step on the brake and push the button. This will put it in ACC position so you will need to push it again. Let it sit for a few seconds then push it again. It will then be off and you can do that again and you should be good. This will cause the pump to run and purge the line.
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Thursday, November 5th, 2020 AT 7:34 AM
Tiny
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Awesome folks! Thanks a bunch and wish me luck!
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Thursday, November 5th, 2020 AT 1:08 PM
Tiny
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Thanks. Let us know if you have other questions. Thanks for using 2CarPros.
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Thursday, November 5th, 2020 AT 3:58 PM
Tiny
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Hello again. In other posts I have read about the need to get the rubber fuel hoses and new clamps replaced along with the new fuel filter. Is this something I should be doing? If so, what is the part number (genuine part)? Would a pair of long nose locking pliers come handy? Thank you.
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Friday, November 6th, 2020 AT 6:52 PM
Tiny
KASEKENNY
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Are you talking about the hoses that connect to the filter? If so, your filter should have quick disconnects with plastic lines. If so, you should only replace those when they are leaking. The rubber fuel lines that are recommended to be replaced are most likely on older vehicles. Rubber fuel lines will dry root and leak so they recommend replacing them prior to that happening.

If there are other lines that you are talking about, get a picture of them and we will better understand. Thanks
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Friday, November 6th, 2020 AT 7:06 PM
Tiny
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Thanks KaseKenny1. Yes, I was talking about the hoses that connect to the filter. What about the hoses clamps? Will I be able to reuse the same ones? Cheers
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Friday, November 6th, 2020 AT 8:16 PM
Tiny
STEVE W.
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You shouldn't need to touch the clamps. In the image the items marked as 1 are what you remove from the filter, then reattach once the new one is installed. The clamps you see are not regular clamps they are crimped onto the line and don't get removed or replaced unless the line is damaged.
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Friday, November 6th, 2020 AT 8:36 PM
Tiny
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I understand. Many thanks folks. This site is awesome!
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Saturday, November 7th, 2020 AT 12:06 AM
Tiny
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Sounds great. Thanks for the kind words. Please tell your friends and come back next time you need some help. Thanks for using 2CarPros.
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Saturday, November 7th, 2020 AT 3:09 PM

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