What you are experiencing with your car is normal. Gasoline is made up of hydrocarbons. I can't pass emissions. Limits are HC 220, CO 1.20. I read HC 318, CO 5.63.
Timing is ok.
O sensor 1 yr ago. Car runs ok. The reasons for the high emission are numerous. After awhile it goes away. If your car is not losing coolant, or if it does not puff white smoke while at normal operating temperatures, it is okay.