PLEASE HELP. I HAVE A 1998 CHEVY SILVERADO WITH A 350 V8 5.7 LITER. WHEN I IDLE AT A STOPLIGHT I HAVE A SLIGHT MISS. I’VE TAKEN IT TO SEVERAL MECHANICS AND MY LOCAL GM DEALERSHIP. I WAS TOLD THAT #5 CYCLINDER SHOWS A MISFIRE AT LOW RPM BUT IT IS NOT AN ELECTRICAL PROBLEM BUT RATHER THAT THE FUEL INJECTOR WAS STICKING. CLEANING THE INJECTOR DIDN,T HELP SO I PUT A NEW FUEL INJECTOR IN LEADING TO THE #5 CYLINDER. I ALSO REPLACED THE SPARK PLUGS AND WIRES, DISTRIBUTOR CAP AND ROTOR BUT NOTHING HAS CHANGED. CAN SOMEONE PLEASE HELP. THANK YOU