My son recently bought a 2002 Sentra SER Spec V with about 85000 miles on it. The car appears very clean and well maintained. The check engine is on with a code po420. We have also noticed the car appears to be consuming about 1 qt every 400 miles or so. The top end of the motor appears to be fairly new looking compared to the rest of the engine. The car does not smoke nor are there any leaks. If the car is burning oil, could it cause the problems with the o2 or the cat converter, whichever is bad? What steps would you guys we take next? Thanks
- posted
17 years ago