Deener2 Posted July 7, 2018 Share Posted July 7, 2018 Hi all, I am in the middle of a headgasket job and I found an extra part on the ground that I don't recall seeing on the tear down. This is on a 2010 forester xt. It's a small rubber washer, it seems very brittle now and I cracked it in half by barely touching it. Can anyone identify it???? I have no idea where it could have come from, so I am not even sure that it came from this engine. Link to comment Share on other sites More sharing options...
potter2010 Posted July 7, 2018 Share Posted July 7, 2018 Hmmmm, if you didn't replace any others of these it might be from something else. I'm not an expert but i'm thinking if you missed a gasket on something worst case you'll see something leaking once you start driving? Link to comment Share on other sites More sharing options...
Deener2 Posted July 7, 2018 Author Share Posted July 7, 2018 Ha ha...yeah, I cannot locate anything of the sort that it could be from on the intake or engine etc. The thing is, I swept the floor before starting the tear down, so I have reason to suspect it very well could have come from the engine. Link to comment Share on other sites More sharing options...
montana tom Posted July 8, 2018 Share Posted July 8, 2018 You didn't have the oil pump off did you? That could be a pump seal....if you had the pump off you'll have to go back and check. Better chance it was laying on top of something and you dislodged it. Link to comment Share on other sites More sharing options...
Deener2 Posted July 8, 2018 Author Share Posted July 8, 2018 Actually, no the oil pump is still on. Haven't removed it either. I do recall some similar rings like that on the old ea82 pumps, but I haven't touched one of those in this shop ever. Good suggestion though... Link to comment Share on other sites More sharing options...
idosubaru Posted July 8, 2018 Share Posted July 8, 2018 looks too small to be an EJ oil pump o-ring.. Im wondering about a VVT solenoid or sensor o-ring. Did you disconnect any AC or power steering lines? i haven’t had the 2010’s off but fuel injector o-ring? Link to comment Share on other sites More sharing options...
heartless Posted July 8, 2018 Share Posted July 8, 2018 at just barely 15mm outer diameter, thinking it is a bit small for an injector o-ring too... but I have no experience with one that new.. I honestly can not think of anything that small. XT is a turbo model, right? could it have something to do with the turbo system? Link to comment Share on other sites More sharing options...
Deener2 Posted July 8, 2018 Author Share Posted July 8, 2018 4 hours ago, idosubaru said: looks too small to be an EJ oil pump o-ring.. Im wondering about a VVT solenoid or sensor o-ring. Did you disconnect any AC or power steering lines? i haven’t had the 2010’s off but fuel injector o-ring? I didn't see any seals on the vvt sensors when they came out. They are a bit bigger than this ring too. Did not disconnect power steering, just unbolted the unit and swung it over. I DID undo the power steering lines. I will check around there. I didn't take the injectors off, just unbolted the entire intake. Link to comment Share on other sites More sharing options...
Deener2 Posted July 8, 2018 Author Share Posted July 8, 2018 1 minute ago, heartless said: at just barely 15mm outer diameter, thinking it is a bit small for an injector o-ring too... but I have no experience with one that new.. I honestly can not think of anything that small. XT is a turbo model, right? could it have something to do with the turbo system? All of the turbo seals appear to be copper washers. I didn't see anything rubber on the unt It except for the bottom hose, which its definitely not from there. 1 Link to comment Share on other sites More sharing options...
heartless Posted July 8, 2018 Share Posted July 8, 2018 it was just a thought.. Link to comment Share on other sites More sharing options...
Deener2 Posted July 8, 2018 Author Share Posted July 8, 2018 6 minutes ago, heartless said: it was just a thought.. Yes, thank you. All of these suggestions are really helpful. 1 Link to comment Share on other sites More sharing options...
GeneralDisorder Posted July 8, 2018 Share Posted July 8, 2018 I don't recognize it given what you took apart and I've been through these engines hundreds of times. I just finished a 600 HP FXT for the West Coast Subaru Show. My guess would have been injector o-ring given the approximate dimensions but you ruled that out. Maybe it was laying on top of the engine from previous work on the injectors and just fell out when you pulled the engine. GD Link to comment Share on other sites More sharing options...
Deener2 Posted July 8, 2018 Author Share Posted July 8, 2018 GD!!!! Thanks for chiming in. I am very familiar with your posts, and I didn't expect you would still be around this board. You have guided me through many ea82 and even a few ej issues in the past. One thing it looked to be similar in size to, was the dip stick o-rings, but mine are still intact. I checked the cam sensors and they are still there...and also a little bigger. I think you are right. I'm not going to worry about it too much, but thanks everyone for the input!!! Dean Link to comment Share on other sites More sharing options...
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