1981 280Z
I moved back to Texas after 18 years in Colorado. My car ran fine in CO but now it is hard to start. Have had it worked on at a classic car place. Still hard to start but run fine. Does it need a tune up after being in altitude? Also, there is a gas station here that sells non ethanol gas. Should I try that gas? While in CO I used regular unleaded but in Texas I have been using premium. Any advice? Thanks! Ceil