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Old 03-30-2015, 12:04 AM   #1
erikonetime
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Default Look what came out of my fuel filter..

So last night my car began running crappy (Stage 2 2004 WRX). Out of nowhere, the car started hesitating really bad and after a few miles of driving, it started idling like crap too. Anytime I'd attempt to accelerate moderately hard, the car would buck, almost like my clutch was slipping. I thought I was somehow overboosting since I just retuned (16.8psi max boost), so I reflashed and carefully drove home.
I did a lot of research, and this morning I went to the auto parts store to get some stuff. MAF cleaner, spark plugs, injector system cleaner, and a new fuel filter.
I really thought it was the MAF cause there actually was quite a bit of debris on it. But, when I went to pull the filter, I got worried. Not only were the lines practically glued to the old filter since it probably hasn't been changed in ages...but it weighed like a pound heavier than the new one. I've only had the car since December but I never even thought of replacing the filter.
When I pulled it out, out of curiosity, I hooked a line up to the inlet and outlet and blew, catching the gas in a mason jar. This is what came out.

Yeah..
So I replaced it, cleaned the MAF, installed the new plugs, and she's running like a beast again.
I'm just worried about how the hell it got that bad. Bad gas? I'm going to be checking the gas tank tomorrow to be sure it's alright.
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Last edited by erikonetime; 03-30-2015 at 02:25 PM.
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Old 03-30-2015, 12:55 AM   #2
Kueller
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That looks nasty. Is the liquid itself that color, or does the dark stuff settle out as sediment?
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Old 03-30-2015, 01:57 AM   #3
erikonetime
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Quote:
Originally Posted by Kueller View Post
That looks nasty. Is the liquid itself that color, or does the dark stuff settle out as sediment?

That's how it came out of the filter after sitting in the car overnight. And even after sitting on the shelf all day only a small amount has settled, it's still dark
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Old 03-30-2015, 09:07 AM   #4
fastnoypi
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that is really bad. Is that the original fuel filter? if not, where do you fill up?
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Old 03-30-2015, 02:25 PM   #5
erikonetime
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Quote:
Originally Posted by fastnoypi View Post
that is really bad. Is that the original fuel filter? if not, where do you fill up?
I haven't touched it since I got the car, and it probably hadn't been replaced for a long time before that. It's probably not the OEM one though (hopefully). And I really only fill up at the Safeway near my house
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Old 03-30-2015, 03:01 PM   #6
Bacon117
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Get a coffee filter and filter it, try to see what it is, dirt, sand? Got any enemies? I had sand in my tank once, ruined my pump. Not sure how it got there, but I suspect a ****ty neighbor. Luckily, that is the point of a fuel filter. Better it collects in the filter than in the injectors.

BTW, those lines are almost always "glued" on. When I had the sand, I replaced the new filter after 3k miles, and it was still a complete bitch to get off...
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Old 03-30-2015, 03:02 PM   #7
tebriel
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reminds me I should replace the fuel filter on the wrx I just bought.
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Old 03-30-2015, 03:57 PM   #8
erikonetime
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Quote:
Originally Posted by Bacon117 View Post
Get a coffee filter and filter it, try to see what it is, dirt, sand? Got any enemies? I had sand in my tank once, ruined my pump. Not sure how it got there, but I suspect a ****ty neighbor. Luckily, that is the point of a fuel filter. Better it collects in the filter than in the injectors.

BTW, those lines are almost always "glued" on. When I had the sand, I replaced the new filter after 3k miles, and it was still a complete bitch to get off...

I have a really good alarm on my car and I don't really know anyone who would do that.. I hope lol. I'm thinking it had been in the tank awhile; I never really run below a quarter tank until the night it happened.
Also, after sitting on the shelf for 24 hours, it actually separated itself. Seems like three layers. Bottom liquid layer (water? Is it more/less dense than gas?), dirt layer, and gas on top.
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Old 03-30-2015, 04:30 PM   #9
erikonetime
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Never mind, disregard the water in that post ^ My friend just told me he messed with the filter with water trying to get more out. There wasn't water in the filter
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Old 03-30-2015, 04:55 PM   #10
Bacon117
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Quote:
Originally Posted by erikonetime View Post
I'm thinking it had been in the tank awhile; I never really run below a quarter tank until the night it happened.
The amount you have in your tank doesn't matter, unless the stuff floats on fuel. The fuel pickup doesn't float, so anything on the bottom of the tank immediately gets picked up...

Dude, filter it, see if it's rubber or dirt. If it's rubber, something is disintegrating in your fuel system.

Or see if it's charcoal, the charcoal canister could be coming apart.

Bottom line, I don't think you have seen the end of this problem, it's just temporarily fixed.
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Old 03-30-2015, 05:12 PM   #11
fastnoypi
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With gas that contaminated, you should consider sending your injectors away to get properly bench cleaned. That pour-in-your-tank cleaner won't cut it.
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Old 03-30-2015, 06:11 PM   #12
erikonetime
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Quote:
Originally Posted by fastnoypi View Post
With gas that contaminated, you should consider sending your injectors away to get properly bench cleaned. That pour-in-your-tank cleaner won't cut it.

I know, I've been thinking that too. But I'm upgrading injectors in like 2 weeks, I really just need them until then
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Old 03-30-2015, 06:12 PM   #13
erikonetime
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Quote:
Originally Posted by Bacon117 View Post
The amount you have in your tank doesn't matter, unless the stuff floats on fuel. The fuel pickup doesn't float, so anything on the bottom of the tank immediately gets picked up...

Dude, filter it, see if it's rubber or dirt. If it's rubber, something is disintegrating in your fuel system.

Or see if it's charcoal, the charcoal canister could be coming apart.

Bottom line, I don't think you have seen the end of this problem, it's just temporarily fixed.

I'm going to filter it tomorrow after work. But wouldn't the canister clog the vacuum lines before it even hit the tank?
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Old 03-30-2015, 06:21 PM   #14
Uncle Scotty
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and this is why im gonna ditch the tank mounted filter and put one back where it belongs under the hood

I haven't had any issues...but.....yeah.
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Old 03-31-2015, 04:10 PM   #15
shamrock 05
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ya 02-04 huys are lucky to have it under the hood. And I beleive that its every 60K that the fuel filter should be changed.


And to the guys who asked if you had any enemies....doesnt matter, out gas doors are locked (unless it was pried open)
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Old 04-01-2015, 02:31 PM   #16
spongebobturbopants
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dude safeway gas is pisswater. go to a top tier gas station. I'm surprised nobody's mentioned this yet. you can find a list of top tier gas here. http://www.toptiergas.com/retailers.html

I honestly wouldn't be surprised if that was in the gas you bought...
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