|
Yes to both your questions. There is a good chance your fuel injectors are partially clogged & not spraying fuel like new. This doesn't atomize the fuel properly so some of the fuel doesn't burn throughly, and this is the source of the HC or hydrocarbons. New sparkplugs will help this. Easyest way to improve this is to pour a bottle of seafoam or Techron fuel system cleaner into 1/2 tank of Chevron Supreme & drive the car hard 3000 to 4000 rpms as much as possible. This should clean the injectors & dislodge some carbon in the engine which can get into the oil, so after that tank of fuel is gone change the oil & filter. Refill with Chevron Supreme & install new sparkplugs. On the day of the smog test drive your car on the freeway 3000+ rpm 30min+, then go directly to the testing shop.
|