Valve cover gasket replacement

HAZARDOUSKUSH777

MEMBER
1999 SUBARU LEGACY
2.5L
6 CYL
4WD
AUTOMATIC
258,000 MILES

Hello, I have found out that my vehicle listed above (Outback model DOHC engine) is leaking oil through the valve cover cover gasket. I went out and bought the valve cover gasket from Napa. I got home and I took out the windshield washer reservoir and disconnected the battery. Then unplugged the wire from one spark plug and unscrewed it as well. Now since I do not know if I could/should put the new spark plug back in where I took out the old one before or after I replace the valve cover gasket? And if it is after then how do I replace it?

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,959 POSTS

It is a great idea to change the spark plugs when doing this job but be sure to use OEM factory replacements do not fall for aftermarket plugs it will make it run worse.

Here are two guides that will help you see what you are in for when doing the job:

https://www.2carpros.com/articles/how-to-change-spark-plugs

and

https://www.2carpros.com/articles/replace-valve-cover-gasket

Check out the diagrams (below).

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken

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