Changed your FUEL FILTER Lately? (filter cut open pic) - Page 4 - The Unofficial BMW M5 Messageboard (m5board.com)

vitacura · 14th August 2008, 03:14

Great info! I see my next little project.

TMcNasty · 15th August 2008, 02:28

Quote:

Originally Posted by ard

So $160 is a bargain.
Have you done the MAF airflow test yet? You should.

Oh I agree about the bargain. I meant for it to sound sarcastic, but I guess I didn't type it right.

My MAF's reading was pretty good b4 the work, but I've been meaning to redo it. Still have 2 O2's to put in first.

Lancefitzgiben · 17th August 2008, 21:27

didn't someone on here tell me that the fuel filter didn't have an element, but was rather just more like a percolator or something...?

good to see it's actually got an element, i thought it'd have to have one. hence "filter"

lednuor · 18th August 2008, 21:34

Thank you for the heads-up re the fuel filter.
I notice that BMW recommends a change at 100 K miles- which sounds a bit too round and, of course, is well outside even an extended service plan.
I just had the dealer change mine and asked for the old filter. I did not bother cutting it open as the gas the flowed out the intake looked like black ink and there was a also a pinch of small black particles in the mix.

6spd · 18th August 2008, 22:16

Maybe finding a large Rigid pipe cutter would help open the filters up.

gherardini · 19th August 2008, 02:00

When I changed mine last weekend I let it drain into my measuring cup thinking I might put the spent fuel into my beetle, it not being too choosy about its fuel as the ///M is. But the black particulate that was draining into the container got to be so thick that I just stopped and capped the filter. Then I had to wait for a day for it to settle enough to pour the clear fuel into the beetle's tank. The black residue leftover was pretty considerable. Nice that it's not restricting my fuel flow any more...

jks540i · 25th August 2008, 09:15

Quote:

Originally Posted by REKIII

There are a couple other threads that recomend replacing the pump as well when doing this. THe theory is that the pump had to work extra hard to pump through a clogged filter, so it's probably hurt a little too.

Probably over kill, but I thought I'd mention it.

Bob.

were they just going on a theory or did they confirm that the fuel pressure and volume were below spec?

Alin10123 · 25th August 2008, 11:00

Wow... dang...

jks540i · 25th August 2008, 23:51

you might as well do all 8 injectors while you're at it in case the clogged filter affected them as well :p

gavinp · 9th October 2008, 00:25

Just replaced the fuel filter on my 2001 M5
For all you fellow Right Hand Drivers, the fuel filter is under the passenger side of car.
Straight forward enough once I had worked out where to put the axle supports as the panel to remove tucks under the N/S/F jacking point.
Also replaced the 2 vent hoses from heads to seperators and cleaned out the air filter boxes and checked tightness of all visible hose clamps.
Took for a spin, and whether placebo affect or not, the car felt sharper !