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Thread: Symptoms of fuel pump O-ring problem? Reply to Thread
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  Topic Review (Newest First)
01-14-2017 08:19 PM
nepbug Well, my 01 is exhibiting these symptoms, so I pulled the pump to give it a check, and mine was fine, bummer, that would've been too easy.

I pulled the cap off to check the condition of the o-ring anyways, it was fine as well.

I did want to pass on one tip for getting the cap back on. Petroleum jelly (vaseline).

I put a very thin coating of petroleum jelly on the O-ring (totally safe for your fuel system in case you're wondering, i always use it on fuel injector o-rings as well), put the o-ring back on the plastic part and then the cap slid on without much difficulty and without kinking itself. I also put a slight amount of PJ on the inner part of the cap to help it all slide together.
12-18-2016 02:45 PM
Boise Jim Just realized I might be able repair it with fiberglass resin after I searched online for repair ideas. Anyone see any problem with that? Really don't want to spend a few hundred for a new assembly.
12-18-2016 02:39 PM
Boise Jim Sonuvabitch! When pulling the hoses off my fuel pump assembly, one of the plastic nipples cracked.
Anyone out there have just the assembly part they would like to sell?
This is going to be one expensive screw up...

At least my o-ring was shot, so I need to replace that.
12-05-2016 02:30 PM
1 Lucky Texan I'd say likely unrelated.

most folks struggle with the P0420 code, can be as simple as an exhaust leak, bad wiring , bad rear sensor, etc. Can be complex A:F ratio problem.
12-05-2016 02:06 PM
Rico Rivaldi ahh my bad, it is code p0420
11-29-2016 01:32 AM
1 Lucky Texan what is the code again? should be P followed by 4 numbers (like P0420)

if there is a cracked tab on the metal cap - you will need to order that too.
11-28-2016 04:46 PM
Rico Rivaldi hello everybody!! im new to the forum and to subarus. I have this 00 legacy that has the rought start issue, it only starts right up when i prime the fuel pump a few times, my old fuel pump died, and i have replaced the fuel filter. Im sure this has to do with the infamous o ring, i just order the pk from Amazon, my question is....Did you guys get the P040 code when the oring was bad??

I have been struggling with this code, I cant pass emissions, and I wonder if these 2 issues are related.

09-29-2016 10:06 PM
Originally Posted by 1 Lucky Texan View Post
way back when I was investigating this - I actually traded an 'english' measurement with someone who had metric 928's - we decided the metric was a better fit so - I can't 'honestly' say anyone 'knows' what the stock OEM o-ring is.

but you can buy them in packs of 10 from Amazon and probably other places like; zoro, msc, grainger etc.

maybe contact this guy (I have no connection with him, just found it with a general search);
Hey, thanks for the link. I got in touch with the guy with the extra O-rings Monday. I received it Thursday in the mail. Quick, painless, and cheap. What more is there?
08-02-2016 11:56 PM
spoonfork For the record, I've had the the "O-Ring" issue on my 2000 outback 4 Cyclinder engine.

See my post.
07-27-2016 02:42 PM
Sherpaman thank you very much kind sir
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