i just bought a '03 WRx with 83,000 miles. i was driving it with a friend. showing him what it has stock. when i hit 60 the check engine light came on. i pulled over to check it out. Carbon from the exhaust was a lot stronger in the smell. it was idling a lot ruffer than normal.
could this be a timing sensor? i just want to get it fixed asap so i can stop taking my sisters car.
please get back to me with help and answers.