hi everyone, I have a 2000 lincoln Ls v6 and the check engine light came on. my car has been driving rough, as in the engine sputters. So i took it to advance auto parts and i got the code p0306.The person at advance told me that maybe i need a tune up (mileage at 100,000) and since i had the car at 60,000 i never had one done. Now my question is, is this good advice? I only know min. about engines, i really need the help thanks