my car has 110,000 miles and has been serviced every 15,ooo. now in the mornings I get a strong fuel smell till it warms up.now the car some times acts like its runinng on all 8 some times it feels like 6 or 7. it been in and out of the shop for a long time.they have replaced o2 senser, ecm senser, ran compression test nothing lower than 170psi.and it skipps very bad when you come to a stop. but runs great at all speeds and has lots of power.