Last month I bought an 8th gen civic si with 140k miles on it. The engine idled and pulled fine on the test drive, and the owner claimed it didn't use much oil and I believed him. Fast forward to getting it home and pulling the cold air intake apart, I find a gaping hole in the tubing, not sure how long the car has been sucking dirt for. The engine burns a lot when driven hard and hitting VTEC, probably a quart per tank of gas if I'm hard on it.
I didn't have time to do a leak down but compression was pretty even at 155-165psi across all the cylinders cold. It hasn't pushed the dipstick out but there is a ton of blowby when I take the oil cap off. I installed a new PCV, poured a bit of MMO into the oil, ran it a bit and changed it, within a hundred miles it was dark again. So what should I do?
