Mine has had issues since I bought it: 1984 4 cylinder with 40k on engine, new carb and fuel pump and filte wtih a K/N. I'm getting 11-13 in the city. No one can figure out why. It's running waay ricch I know but no mechanic can seem to fix it. I'm going to try to lower the float leve. On the freeway I'm at 15-17 mpg.