i failed emissions once again yesterday , this is test number 4 , the hydrocarbon should be at 80.00 mine was at 87.00 , so yesterday evening the only things left to replace were the o2 sensor , i had a tune up done ( the last one was a year and a half a go ) .i replaced the cap , rotor , plugs and wires , the old cap was worn out as well as the rotor , so hopefully after spending $700.00 just on my emissions i will pass . if not i'm leaving the car there and walking away , because i'm not spending a penny more on the car's emission .