RX-7 Tech Support

The Nikki carb that came on the 1979-1985 12A powered RX-7 is pretty reliable and performs well in most circumstances. With regular driving and periodic fuel filter changes, they are pretty trouble free. The introduction of E-10 Ethanol gasoline in many parts of the U.S. has however presented problems. These break down into two categories: Mixture and Maintenance. All carburetors mix a quantity of fuel proportionately to a quantity of air. E-10 gasoline has less specific energy than the fuel that was sold when the cars were new. Since the carburetor does not know this, the result is a lean...