I was informed of a fuel injector cleaner last night that is directly injected into the schader<sp> valve. Apperently you disconnect the fuel pump, let the engine run out of gas, then install this can of cleaner on the schrader valve. Restart the engine, and it runs off the cleaner and cleans the injectors. The product was seen on that "Crank and Chrome" show, but I have not been able to find any info.