I have a DOHC ZC and it runs decent but it fouls out spark plugs on the #1 cylinder a lot. And every time i go to change the spark plugs the #1 is always harder to break loose and is always dead black after about a month. Also has a random misfire/hesitation when i give it gas sometimes. changed plugs.. dizzy cap and rotor.. wires.. Checked timing which is difficult because i don't have a timing belt cover and can't find one. I was told it might be my o2 sensor so i'm gonna try that but I thought I'd come here and see what everyone else thought about it. Also the only code I'm getting is for my speed sensor and I know that doesn't effect anything but the speedometer.