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Old 05-31-2005, 10:33 PM   #1
TurboCharged97L
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Chapter/Region: Tri-State
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1997 Impretzia
Artic Silver Metallic

Unhappy I Need Help With A Valve Cover Leak

okay i had a leak at the back of my valve cover (2002 wrx) so i went to replace it and everything went fine or so i thought. apparently those bolts are supposed to be torqued very lightly(i over torqued them and made everything worse i think).......the first thing i need is the torque specs on those bolts if anyone could help that would be great. and also if anyone has any advice about replacing the sealant or if my valve cover might just be bad.
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Old 05-31-2005, 10:56 PM   #2
ImprezaVA
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Arcadia Green

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I know on my car the torque is like 3.6 ft-lbs. Just snug them up, these bolts break easily.

-Charles-
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Old 06-01-2005, 12:02 AM   #3
Tim Sanderson
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00 Impreza 2.5 RS
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There are half circle shaped rubber grommets in the rear of the head. You need to check to see if they are leaking.

Basically the rear of the cam points to them.

Take a peak.
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Old 08-20-2014, 10:57 PM   #4
tjscoobs91
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i have a similar issue with my '02 bugeye. the valve covers were pretty gunked up with oil residue(240k). i finally got around to replacing them. seemed to go well, until i ran it and noticed alot of smoke. the passenger side appears to be leaking at the bottom of the cover closest to the firewall. i did not use any silicone or anything other than the gaskets. can anyone help me out with a tip on how to get them to seal properly.thanks
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Old 08-20-2014, 11:38 PM   #5
DrD
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When I did the valve cover gaskets on my old 02 (pass side was leaking onto the up-pipe - annoying!) you need to clean the sealing surface really well on the heads as well as the valve covers. You then are supposed to use sealant in a couple of locations in addition to the gasket (basically everywhere there is a sharp corner - particularly at the front of the engine where the heads are curved and have an inside corner the gasket seals to) - there are also the half-moon seals on the back of the heads (I didn't mess with these, and they didn't leak on my car) - I replaced the gaskets at the bolts and the spark plug tubes, as well. First one on the passenger side of my car leaked because I pinched the gasket - you need to make sure you get it in there correctly (a few dots of silicone helps hold it in place)
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Old 08-20-2014, 11:45 PM   #6
tjscoobs91
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yea i think its those half moon shaped head plugs that are leaking. Of course they werent part of my kit. Do they need to be replaced, or can i try putting rtv on them?
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Old 08-21-2014, 10:03 PM   #7
dcsti
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It is really difficult to get the "half moon" plugs out without damaging them in my experience.

I'd get some new ones.

The service manual calls out Fujibond at several locations on the gasket. Putting it in dry probably won't work.
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Old 08-22-2014, 01:36 AM   #8
tjscoobs91
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By any chance do u have a pdf off the manual with details on where to apply fujibond as well as torque specs?
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Old 08-22-2014, 01:52 AM   #9
Gmfergione
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http://techinfo.subaru.com/index.html

Here is the service manual for the WRX. I went through and replaced the valve cover gaskets on my WRX and this helped me...not gonna bother looking for the page it's on, but its in there and has pictures.

Valve cover bolts are indeed 3.6 ft/lbs
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Old 08-22-2014, 11:41 AM   #10
esteve
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Yeah, I'd definitely replace the half moon plugs. They're easy to change (just pop them off with needle-nose pliers) and are often a source of oil leaks. Also, the plastic material gets brittle from heat and chips off along the edges. Too bad FHI couldn't find it in their budget to use aluminum half moons like the ones LIC sells...same thermal expansion rate as the heads/valve covers and will last forever.

Permatex ultra grey also works really well and is readily available.

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Old 08-22-2014, 03:19 PM   #11
tjscoobs91
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thanks for the tip on using ultragrey. i priced the fujibond, they want $30, which is outrageous. and yes, i saw the aluminum ones from LIC, but unfortunately its out of my budget for right now. a complete OEM set is about $30.
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