Quote:
Originally Posted by DonDavis
Yup, I think you nailed it. Replace the plugs, plug wires and coil pack.
Replace the valve cover gaskets with factory new ones. Take your time with the gaskets. They are directional, closely inspect the old ones for tiny lines, compare to your new factory gaskets. And please properly torque the cover bolts.
I bet it’ll run great after that.
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Agree 100% with this, and that's from currently owning a 2005 Legacy with the 2.5 2 cam engine and a pair of older Legacy's with the 2.5 4 cam engines.
On the 2 cam 2.5 engines the "spark plug boot" between the spark plug tube and the valve cover over time become hard as a rock and fail to seal the spark plug tube from the oil in the valve train. It's a pretty easy job and use all new grommet seals around the bolts (5 per side more than likely on that engine) a pair of new spark plug boot seals and a new valve cover seal. Just have to be real careful putting the valve cover on, try going straight on with it so you don't fold or misalign the spark plug boot seals by moving the cover up and down when putting it on. Great time to check the valve adjustment while you are there.