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      01-04-2019, 02:39 PM   #23
Manny G
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I got curious about my fuel filter, and realized that when looking at realoem with my VIN, i dont see one?
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      01-04-2019, 04:12 PM   #24
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Originally Posted by Manny G View Post
I got curious about my fuel filter, and realized that when looking at realoem with my VIN, i dont see one?
All UK and European M5 F10's have one, the one on mine was changed at 17000mi on service schedule.I suggested to someone else on their US M5 to loosen the under floor aero and take a look there around the middle of the floor pan if there is something there which has a metal shield covering it.There must be something or what would stop microscopic debris making their way to the...injectors.
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      01-07-2019, 05:17 PM   #25
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Yeah well I already broke down the lift and put it away and I don't want to get it out again just to go look for the fuel filter

Maybe lack of a filter is why I got a letter from BMW NA saying something about the warranty for injector problems has been extended...
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      01-08-2019, 01:34 AM   #26
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Its built into pump i think
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      01-08-2019, 08:24 AM   #27
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If not there under the floor (it was only a suggestion from me) then it may be on top of the fuel tank on the left (on US drivers side) opposite side to the fuel pump after taking back seat off.Again,it's after what I saw and read so don't take it as gospel from me.
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      01-09-2019, 03:28 PM   #28
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Quote:
Originally Posted by Craze View Post
Its built into pump i think
That's what I think too. On e39 or e60 it was on the pump and no separate filter. "Lifetime " filter, i.e. the life of the pump and filter, not your car.

On much older BMWs with a inline filter, you had to replace it after X years because it just swells up over time and isn't necessarily clogged with dirt. On those cars there was something like a mesh bag over the pump inlet in the tank as a first stage filter. I sure hope there is something better than that on the US F10.
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      02-07-2019, 11:09 AM   #29
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Had the car smoke tested, no leaks found. Reset the adaptations with Autologic diag computer, drove the car, no CEL turned back on.

Turns out that after replacing the MAFs with new ones, I needed to have the adaptations manually reset. Hind sight, the original issue the car had which lead to being taken to the dealer the first time was more than likely linked to dirty MAFs. The dealership changed a whole lot of stuff to my benefit when they would have been fine just cleaning the MAFs and clearing adaptations.
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      03-13-2019, 02:29 PM   #30
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This got more complicated.

Turns out that there was a leak found when smoke testing from the exhaust side. After that was fixed, fuel flow was incorrect. Sent the car back to a different dealer, they found out that the last dealer installed the wrong injectors. The ECU was looking for EU5 injectors, I had EU6 injectors incorrectly installed by the dealership when they were shotgunning the repairs.

All good now.
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      05-06-2021, 08:49 PM   #31
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I seem to be having the same problem as you. Car is a late 2013 with 149k km (about 90k miles) competition spec LCI.

Carly pulled fault code 118602, 128301,12BD80 which all points to Lambda probe upstream of catalyst mixture too lean, signal firmly lying on fat, group error to lambda probe upstream of catalyst.

Initially idle was rough too, but after replacement of both upstream O2 sensor, idles wear now.

So far, I have had
8 injectors replaced
8 emission coils replaced.
2 O2 sensors replaced - did allow the car to idle much smoother, i saw the O2 sensors, one was black (carbon deposited), the other was nice brown. Kind of correct color.

Car is bone stocked other than Akraprovic cat back exhaust, and not tuned, maintenance done so far had to fix vanos issue on one bank (massive job), Con rod bearing replaced for peace of mind.

It is beginning to burn some cyclinder oil about 1L every 1500 km. Used to not burnt a drop of oil.

Every time I clear the check engine light, and the code, it will reappear after a few days. The car otherwise drives well, no issue.

Any thoughts on what else I am missing?

Thanks in advance for any kind thoughts or ideas
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      05-06-2021, 08:52 PM   #32
Manny G
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Quote:
Originally Posted by proscar View Post
I seem to be having the same problem as you. Car is a late 2013 with 149k km (about 90k miles) competition spec LCI.

Carly pulled fault code 118602, 128301,12BD80 which all points to Lambda probe upstream of catalyst mixture too lean, signal firmly lying on fat, group error to lambda probe upstream of catalyst.

Initially idle was rough too, but after replacement of both upstream O2 sensor, idles wear now.

So far, I have had
8 injectors replaced
8 emission coils replaced.
2 O2 sensors replaced - did allow the car to idle much smoother, i saw the O2 sensors, one was black (carbon deposited), the other was nice brown. Kind of correct color.

Car is bone stocked other than Akraprovic cat back exhaust, and not tuned, maintenance done so far had to fix vanos issue on one bank (massive job), Con rod bearing replaced for peace of mind.

It is beginning to burn some cyclinder oil about 1L every 1500 km. Used to not burnt a drop of oil.

Every time I clear the check engine light, and the code, it will reappear after a few days. The car otherwise drives well, no issue.

Any thoughts on what else I am missing?

Thanks in advance for any kind thoughts or ideas
Clean or replace your MAF sensors. My issue grew into the injector compatibility issue because of the tech, but I bet my original issue was just dirty MAFs.
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      05-07-2021, 10:56 AM   #33
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Quote:
Originally Posted by Manny G View Post
Clean or replace your MAF sensors. My issue grew into the injector compatibility issue because of the tech, but I bet my original issue was just dirty MAFs.
Great, thank you for the reply, will try that. I did ask my tech if a dirty MAF will result in that, he said it should then throw an MAF fault code which it didn't. He is now worried that cyclinder 3 may have lower pressure as the spark plug was darker than the rest. I hope we are not looking at a top over haul!

I will try cleaning the MAF. This is driving me up the walls!
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      05-08-2021, 08:11 AM   #34
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I went through the same, and I'm a tech at bmw. I ended up replacing my mafs on my dime after having my colleague replace the injectors and high pressure fuel pumps under warranty. Completely resolved my rough idle issue.
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