Presumed oil leak from rear of engine.

subsf · 01-20-2013, 12:56 AM

I've got here a N/A EJ25 from a 2000 Impreza.
Bought it off a fellow, so I don't know the stories behind the motor.

In the back, there seems to be an oil leak. As you can see here:

I'm making an assumption and guessing it's from here:

To me it doesn't look like it's from the oil separator plate, nor the rear main seal. But then again, I'm not what you'd call a professional.

1. What is that blue-circled piece called? I'll need to know if it so happens I need to replace it.

2. Is the leak even from that piece? What's it look like to you, folks?

Thanks for your help!

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Elbert Bass · 01-20-2013, 09:31 AM

Access cover for removal of #4 wrist pin. Sealed with an o-ring. Remove the two #3 phillips screws and replace the o-ring to fix. Usually the screws are too tight for hand removal. Best way to remove the screws is with a 3/8" drive HAND impact driver (the kind you hit with a hammer) and a #3 phillips socket.

Yes, that appears to be the source of the leak.

mod maniac · 01-20-2013, 11:18 AM

^^^ I agree with Bass but I would do it all while it is out.

monkeyposeur · 01-20-2013, 11:44 AM

I would also replace the oil separator plate just in case. They used to be plastic then they changed to a metal plate and then redesigned it again, exactly when I forget. I would get the latest design just to be safe since the motor is out anyway.

geronimo81 · 01-20-2013, 11:45 AM

Yep, do all three just to be safe and sure.

Elbert Bass · 01-20-2013, 01:28 PM

I'd leave the separator plate alone. It is sealed with Fujibond and with that metal plate it is unlikely to leak.

Subieformance_Guy · 01-20-2013, 03:14 PM

The rear plate is def a notorious cause of rear oil leaks. Remove both and put a good bead of silicone on them and they will be fine. Trust me dude Ive done prob 100 of them

subsf · 01-20-2013, 04:11 PM

Thanks, scoob fam! (love ya guys

)

Especially thanks for the removal instructions, I quickly avoided the screwdriver in fear of stripping the screws.

Wrist pin! I knew there was "pin" in there somewhere. Google & Nasioc searches didn't quite get that.

And I agree with Elbert Bass, the separator plate is pretty beefy, and there's minimal leakage. Actually, it's probably all from the access cover for the wrist pin.

But most definitely doing it all while it's out.

monkeyposeur · 01-21-2013, 10:17 AM

It's just a preventative measure. The plastic separator plates were the worst. And if they redesigned the metal one again Subaru must have had a good reason.

Plastic vs. Latest model:

New Sep plate installed on my stock 22T. It's hard to see because I have the flex plate back on, but you can definitely see it doesn't look like your old plate:

01-20-2013, 12:56 AM	#1
subsf Scooby Newbie Member#: 337710 Join Date: Nov 2012 Chapter/Region: BAIC Location: Bay Area, California Vehicle: 2000 Impreza 2.5RS Blue Ridge Pearl	Presumed oil leak from rear of engine. I've got here a N/A EJ25 from a 2000 Impreza. Bought it off a fellow, so I don't know the stories behind the motor. In the back, there seems to be an oil leak. As you can see here: I'm making an assumption and guessing it's from here: To me it doesn't look like it's from the oil separator plate, nor the rear main seal. But then again, I'm not what you'd call a professional. 1. What is that blue-circled piece called? I'll need to know if it so happens I need to replace it. 2. Is the leak even from that piece? What's it look like to you, folks? Thanks for your help! * Registered users of the site do not see these ads.

01-20-2013, 04:11 PM	#8
subsf Scooby Newbie Member#: 337710 Join Date: Nov 2012 Chapter/Region: BAIC Location: Bay Area, California Vehicle: 2000 Impreza 2.5RS Blue Ridge Pearl	Thanks, scoob fam! (love ya guys) Especially thanks for the removal instructions, I quickly avoided the screwdriver in fear of stripping the screws. Wrist pin! I knew there was "pin" in there somewhere. Google & Nasioc searches didn't quite get that. And I agree with Elbert Bass, the separator plate is pretty beefy, and there's minimal leakage. Actually, it's probably all from the access cover for the wrist pin. But most definitely doing it all while it's out.

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01-20-2013, 09:31 AM	#2
Elbert Bass Scooby Newbie Member#: 283429 Join Date: May 2011 Chapter/Region: South East Location: South East TN	Access cover for removal of #4 wrist pin. Sealed with an o-ring. Remove the two #3 phillips screws and replace the o-ring to fix. Usually the screws are too tight for hand removal. Best way to remove the screws is with a 3/8" drive HAND impact driver (the kind you hit with a hammer) and a #3 phillips socket. Yes, that appears to be the source of the leak.

01-20-2013, 11:18 AM	#3
mod maniac NASIOC Supporter Member#: 300551 Join Date: Nov 2011 Chapter/Region: SCIC Location: mariposa ca. Vehicle: 2002 DD wgn 6 spd 2.1 kel 272's meth 2.5xtr	^^^ I agree with Bass but I would do it all while it is out.

01-20-2013, 11:44 AM	#4
monkeyposeur Scooby Newbie Member#: 333468 Join Date: Sep 2012 Chapter/Region: RMIC Location: SLC, UT Vehicle: 93 SS Black Pearl	I would also replace the oil separator plate just in case. They used to be plastic then they changed to a metal plate and then redesigned it again, exactly when I forget. I would get the latest design just to be safe since the motor is out anyway.

01-20-2013, 11:45 AM	#5
geronimo81 Scooby Newbie Member#: 154586 Join Date: Jul 2007 Chapter/Region: BAIC Location: San Ramon Vehicle: 1996 ej22 Outback White	Yep, do all three just to be safe and sure.

01-20-2013, 01:28 PM	#6
Elbert Bass Scooby Newbie Member#: 283429 Join Date: May 2011 Chapter/Region: South East Location: South East TN	I'd leave the separator plate alone. It is sealed with Fujibond and with that metal plate it is unlikely to leak.

01-20-2013, 03:14 PM	#7
Subieformance_Guy Scooby Newbie Member#: 108716 Join Date: Feb 2006 Chapter/Region: South East Location: Swannanoa, NC Vehicle: 2004 2.1L, PT 6069 480@30psi Subarus-R-Us	The rear plate is def a notorious cause of rear oil leaks. Remove both and put a good bead of silicone on them and they will be fine. Trust me dude Ive done prob 100 of them

01-21-2013, 10:17 AM	#9
monkeyposeur Scooby Newbie Member#: 333468 Join Date: Sep 2012 Chapter/Region: RMIC Location: SLC, UT Vehicle: 93 SS Black Pearl	It's just a preventative measure. The plastic separator plates were the worst. And if they redesigned the metal one again Subaru must have had a good reason. Plastic vs. Latest model: New Sep plate installed on my stock 22T. It's hard to see because I have the flex plate back on, but you can definitely see it doesn't look like your old plate: