Turbo306Fox

iTrader: (3)

I bought a 99 z28 stock 6spd misses really bad at cold start then gets better but will come back randomly. Service engine light flashes which is misfire code I believe but when you slow down and get to 27 mph service engine light stops flashing and after you so that cycle 4-5 times the miss goes away. It will run fine until for example I spin the tires and it will start missing again. Haven't changed plugs and wires yet. This is very irritating any input is appreciated