Started smoking out of the right exhaust pipe during the first session at a track day on Wednesday. Called it a day and drove it home, about 60 miles, with it smoking intermittently.
Removing the top plugs revealed oil on #5. Unsurprisingly, a compression test revealed it was a bit low. Only 70 psi, where the other five were at about 150 (this was done cold the next morning).
*Sigh*. Only 125,000 miles on this build, completed 18 years ago. Only about 80 track days as well. I can't believe such a pampered little cream puff has failed already...
The motor is out and on the stand. Exploratory surgery starts tomorrow. I'm hoping it just broke a ring, that's kinda how it was acting. Both drain plug magnets were absolutely clean, no debris on either one. Pouring the oil through a coffee filter revealed nothing, no debris caught there either. Fingers crossed...