Motor: '95 B18C1 Mileage: 320,000 KMS or 200,000 Miles History: Second owner, original owner was a lady. Motor has been babied up until the last 15,000 miles (When I got it). Motor has been running excellent up until this week...beat a fox body on the highway and thats when I noticed a half misfire out of the exhaust at idle. Motor has no knocks or ticks. Cylinders 1,2,4 have 240 PSI and cylinder 3 has 190 PSI. I inspected the valve clearances and timing and thats all ok so it must be in the bottom end. It burns a bit of oil but I'm always on top of it. My guess is rings or a bearing is about to go. Would the knock sensor pick up a bad bearing?