horrible gas milege after repirs. on 1995 Chrysler Cirrus

I had posted before, and said oil instead of gas. distributer had to be replace, then cylinders full of oil, it was drained, valves,tune up, then real bad hesitation. Flashed computr twice, and then engine tach would bounce around, small engine vibration but only acted up after reaching full temputure, and at complete top. It's intermintune, but gas mileage has gone down to 10-11 mpg. Ideas?

Asked by for the 1995 Chrysler Cirrus
maybe you have an oil leak into your cylinders, right?