New to the site. Just sayin hello. My son was given a 97 gmc sierra 4.3l with 162000 miles on it. Changed the fuel pump, fan clutch, radiator, battery, distributor cap, rotor button, plugs and wires. Still gettin a P0304 dtc. Wsiting for the spider to come in now. No smoke, good compression, spark to all cylinders. Hope this takes care of it. Anyway just wanted to say hello.
John
John