gmoutdoorsman
I'm Awesome
I have a 98 1500 2wd with a 4.3 v6,for almost a year now i keep getting a P0300 random misfire code. Truck runs fine,except under part throttle at highway speed and part throttle at the shift points. It shutters and surges only under part throttle and the check engine light flashes. Truck has ran fine and strong for over 100,000 miles.i cant figure out what the problem is. Has new distributor,cap,rotor,plugs,wires,ignition control module. Any ideas,fuel,compression etc??? Could uneven compression cause this issue, also ive noticed very small specs of metal in the oil. Has 205,000 miles on original engine. It runs fine when you give it a little more gas? Im starting to think its not an ignition issue. Fuel injector lines are not leaking.new fuel pump and filter also...please help