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Thread: Symptoms of fuel pump O-ring problem? Reply to Thread
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  Topic Review (Newest First)
01-22-2016 02:15 AM
Rippin6Gears Anyone have any spare 928 o rings for sale?
11-22-2015 10:06 PM
KennyJB Okay I did a little Google-fu and found the part number for the OEM version of W0133-1617990

It's Subaru 42072AE00A

(Thanks to Peaty @ scoobymods)
ScoobyMods - View Single Post - Fuel filter replacement

Looking at the parts diagram it shows another smaller oring..

FUEL TANK. TANK FRONT '04MY-'05MY.. Fits: Subaru | Subaru Parts Online

I know it's a long shot but does anyone know of the dimensions to replace thst smaller one with a Viton ring? Doesn't make sense to me to replace one with an ethanol resistant material and not the other.

So it looks like replacing the fuel filter and oring will be the same job for me--Im betting my filter is clogged versus the oring having swelled though. I've actually been seeing the OEM filter available for slightly less.
11-22-2015 06:59 PM
KennyJB
Quote:
Originally Posted by 1 Lucky Texan View Post
here's a video link; https://www.youtube.com/watch?featur...&v=oXH1A9sHt6M

or, do a search at youtube for ; ' 2000 Subaru Outback Fuel Pump Assy '
Thanks a bunch!

Is this the same size oring that is on the fuel filter in this video?
https://www.youtube.com/watch?v=P195sFttEHY

Also in the video it shows him turn the key a few times to relieve fuel pressure, is he just turning the key to the ON position?
11-22-2015 01:26 PM
1 Lucky Texan
Quote:
Originally Posted by KennyJB View Post
I have a 2004 and the filter is nowhere to be found under the hood. I read somewhere they started putting them in the tank.

I can't seem to get the video posted earlier in the thread working. I think my oring may be failing, I have been having weird hard starts, but only if it has sat without running for a day or two.

I remember in the past I opened up the hatch under the back seat but didn't really know what I was looking at (was trying to find the source of heatshield rattle before I knew it was the heatshield and heard the fuel pump could make noises if it was failing, so took the hatch off to see if I could hear better) , would it be obvious that something was one if I were to look there again? What's this cap that people mention swollen and cracked?
here's a video link; https://www.youtube.com/watch?featur...&v=oXH1A9sHt6M

or, do a search at youtube for ; ' 2000 Subaru Outback Fuel Pump Assy '
11-22-2015 08:22 AM
rasterman I doubt you'd hear much different.

Once you remove the fuel pump assembly from the tank, you'll see a rather obvious crimped cap over one end of the pump body.
11-22-2015 08:16 AM
KennyJB
Quote:
Originally Posted by 1 Lucky Texan View Post
I have never read of anyone using it and I tossed mine.

Gen2s have a filter under the hood. If yours needs it, good time to replace it as you will have to depressurize the fuel circuit anyway.
I have a 2004 and the filter is nowhere to be found under the hood. I read somewhere they started putting them in the tank.

I can't seem to get the video posted earlier in the thread working. I think my oring may be failing, I have been having weird hard starts, but only if it has sat without running for a day or two.

I remember in the past I opened up the hatch under the back seat but didn't really know what I was looking at (was trying to find the source of heatshield rattle before I knew it was the heatshield and heard the fuel pump could make noises if it was failing, so took the hatch off to see if I could hear better) , would it be obvious that something was one if I were to look there again? What's this cap that people mention swollen and cracked?
11-03-2015 09:55 AM
traildogck @plain OM is correct. The 2001 uses the same specs. I just checked my manual....2000-2006 covered.
11-03-2015 08:19 AM
plain OM I don't have the specs for 2001, but in other years around then it's 30-34 psi with fuel pressure regulator vacuum line connected, 41-46 psi with it disconnected. These might not be exact for your year, but should provide a reasonable range; if the engine doesn't start, and it's a fuel pump issue, the pressure will probably be well below these figures.
11-03-2015 01:50 AM
Imprezkid I have a 2001 that is not starting. What should the fuel pressure be while cranking? I've searched and cannot find.

Thanks
Tanner
07-02-2015 10:00 PM
1 Lucky Texan I have never read of anyone using it and I tossed mine.

Gen2s have a filter under the hood. If yours needs it, good time to replace it as you will have to depressurize the fuel circuit anyway.
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