Yesterday, i did go wot and the ses light flashed for a few secs then went steady on. Went to autozone and they scanned it, p0300 which is a random missfire. I know its got to be something like plug, wires, opti, coil and so on. SES hasnt returned, but i havent gone wot since then either. What you all think. start pulling plug wires and checking??

 

Start with the wires. Be sure none are burned or loose.