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DIY: Do It Yourself
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Old 01-28-2014, 10:35 PM   #181
kwake330xi
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Just to add my 2 cents, I changed my fuel filter a little over a year ago. One week later my fuel pump went. A very experienced tech buddy of mine said that the higher rate of fuel flow from having a new unrestricted filter in there prob caused the pump to burn out. He's seen that happen many times. Chances are the pump was on its last legs and would have needed replaced soon anyway, so I'm not suggesting you don't replace your fuel filter as pm, just warning that if you have a high mileage pump in there, you may want to replace that at the same time.
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Old 05-08-2014, 08:54 AM   #182
spitfingers
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how would i know if i should change my fule filter, i dont know when it was changed and im at 140k?
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Old 05-08-2014, 06:49 PM   #183
MysticBlue
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I would change it. Cheap and easy to do.
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Old 11-15-2014, 05:11 PM   #184
nlinesk8s
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I just did this job, so a couple of comments. There are two 8mm screws on the bottom and two sheet metal looking nuts on the forward end. Why? Who knows? If the filter has been on there awhile, and mine had 90k on it, the hoses will be on there so tightly that you'll have to cut them off, and by cut them, I mean with large tin snips. I tried using a razor to cut lengthwise, but they were on there so tightly that didn't even work, plus I didn't want to damage the plastic lines from the tank. After cutting the hoses, I released the two clamps to lower the plastic hoses from the tank to allow me to get the remaining rubber hose pieces off.

So a good sharp box knife is an essential tool here. And a drip pan, and a plastic golf tee to plug the fuel line from the tank.

One note: If you go to a lot of local parts stores, and you look up "fuel filter", they'll try to sell you the model that only has two connections. Try looking under "fuel pressure regulator" to get the right filter with the integrated pressure regulator.
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Old 07-22-2015, 06:18 PM   #185
djsilver
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Just did my wife's car today. I bought the car with 73k, did the cooling system at 80k, valve cover gasket, CCV, shocks/struts, transmission and diff oil at 100k, cooling system AGAIN at 170k, (right rear wheel bearing and a refurbished drive shaft somewhere in there) I had purchased a fuel filter at 100k and it was still in the box in the garage. ;-) Yesterday she mentioned that when she put gas in the car it only took 9 gallons and read 1/2 tank afterward. It took me about 30 minutes, drove it around the neighborhood then went to the gas station and added another 9-1/2 gallons. So it's official..., the original fuel filter lasted 182k miles!
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Old 07-23-2015, 12:26 AM   #186
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So it's official..., the original fuel filter lasted 182k miles!
Change that sucker every 30,000 miles or so. Same mileage on the fuel pump?
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Old 07-23-2015, 07:59 PM   #187
djsilver
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Originally Posted by SilberVogel View Post
Change that sucker every 30,000 miles or so. Same mileage on the fuel pump?
Yup, original fuel pump (although maybe not for long based on what I've read here!)
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Old 10-20-2015, 10:20 PM   #188
bala808
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I have a 2001 330CI convertible with 107000 miles.Just changed the filter using the DIY. Yes it was pain in the ass getting the hoses off. After doing the chnage I inserted the fuse and did what is outlined in the DIY but the car failed to start. Used to start with one crank before the change. There are two hoses from the fuel tank is there a requirement which goes where?? I read the thread and one of the posts said that there are two different fuel tanks. Now I am wondering if the fuel pump is bust because I havent changed it since I bought it.
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Old 10-20-2015, 10:30 PM   #189
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^ You may have to prime the pump a couple times after replacing the filter, but if the engine doesn't start, double-check and make sure the fuel lines are connected correctly and not reversed.
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Old 10-20-2015, 11:42 PM   #190
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I do have the two inlet tubes towards the tank and one facing towards the engine and a vacuum line. I am 100% confidant that I installed the filter correctly. Only thing I was unsure is if I have to connect each fuel line to a specfic port on the filter. I am thinking airlock but that should be taken care of by the injectors.
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Old 10-21-2015, 12:16 AM   #191
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If you're sure the filter is installed correctly, fuel pump could have given up at the same time (stranger things have happened), but you're correct, those connections on the rear of the fuel filter are line-specific.

Connection #1 (fuel return - blue - inside) and #2 (fuel from tank - black - outside) in the photo below are the ones you should make sure aren't reversed before troubleshooting elsewhere.

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Old 02-08-2016, 11:29 AM   #192
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Did the job yesterday and it took about 1hr because I spent alot of time trying to get the car high enough to get under to do the job. Pretty straight forward but the hardest part was taking off the hose facing the engine, the two hoses facing the trunk were easier.
I positioned myself behind the filter, thinking the gas would shoot from the trunk to the front. But nope, once the front hose came off, that sh!t shot from the engine back and I got a face full of gasoline. Thought I was gonna go blind. That sh!t even got into my ears. Should have wore full face goggles, LOL. Worst sh!t ever!

I inspected the old filter and the gas going into it was super dirty but the gas coming out was pretty clean. Started the car and it sputtered for a lil bit then ran fine. Don't think I notice any performance improvements but hopefully I'll get better mileage as I was only averaging 22.5mpg before. I was at 131k miles.

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Old 03-16-2016, 08:09 PM   #193
swordsman11868
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Quote:
Originally Posted by Linx View Post
Did this today. One thing I noticed reading through this thread is the people who didn't pull the fuse and starve the car seemed to have less fuel flow out. So I didn't pull the fuse or starve the car and sure enough I had a little over a cup come out and most of it was from the filter...

I pulled the fuse, started the engine and the car never stalled. So I pulled the fuel pump relay - the green one in the DME box - and the car wouldn't start.

So I thought "Great, all the fuel pressure is relieved!"

Nope! Gas just kept coming out of the blue return line. I probably got 2 cups or more before I could get the new filter on to stop the flow.

Don't pull the fuse!


One of the posts above mentioned using WD40 to get the old hoses off. Great idea. I'll try some PB Blaster next time.

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Old 05-31-2016, 11:53 PM   #194
kgregory
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This was a big help, thank for posting! I didn't get around to doing this until 123k miles and my car idles smoother, is more responsive, and I think I regained about 2-3 MPG from doing this.

For me, the hardest part was getting access to it because my jack doesn't lift my car very high and it's located right next to the jack stand.

Also, one thing I will say is that fuel never stopped flowing from the one of the rear hoses for me. At first I thought it would be easier to wait for it to stop draining before I put the new part in, so I waited ~5 minutes. After that I unplugged the battery, hoping that would stop it (after double checking the fuse removal) but it didn't. Finally I just put the new filter in while it was still flowing. I had a catch pan for the fuel, so NBD but I wasted about 6-7 quarts of fuel. My guess is that the fuel was siphoning out of my tank, so maybe it would have been wise to do this on a mostly empty tank.
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Old 01-15-2017, 08:35 PM   #195
LeMansteve
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DIY - FUEL FILTER CHANGE (with photos)

I put my car on ramps and pulled fuse 54. Gas tank was about 1/4 full. In total, I got maybe 1 pint of fuel leakage - I guess the volume of the filter plus the volume of the hard supply lines on either side.

To get the hoses off, I used a pair of pliers. Grab the middle of the hose with the pliers and twist back and forth to get leverage, while pulling the hose away from the hard line. The hose will slowly slide off. I got no fuel spray, just minor slow leakage.

Bavarian Autosport sells an excellent fuel filter hardware kit that includes 6 new hose clamps, about 2 feet of vacuum hose and about 1 foot of fuel hose (more than enough to replace all 3 fuel hoses).

I'd recommend replacing the hardware. My clamps were looking rough / corroded and I gave the hoses a beating by twisting them to remove.

Install the 3 new supply lines onto the filter, before getting under the car. Lube the filter nipples appropriately and the hoses will slide right on. Residual fuel on the hard lines can act as lubricant for those connections.
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Old 01-16-2018, 05:03 PM   #196
tritron
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What new hoses we can get to replace the short ones on fuel filter.
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