Ok, so I have a stock 93' geo tracker, I've replace the fuel pump in the last few days as well as the computer has been repaired and all I get now is a code 12.... It has new plugs, wires, Distributer,coil, and igniter.....but the spark is a yellow not a bright blue like I'd expect??? I've checked relays, fuses, etc.... Does anyone have any other advice it rolls ove nicely but will not start or fire at all...
