Hi everyone. My 1997 Landcruiser just popped a check engine light, #6 spark plug missing. My initial thoughts are to change the ignition wires. Vehicle has 106,000 and original wires. I am the original owner. Questions are, is this a logical first step? Other recommendations? How do I have the light cleared; is it done automatically? I doubt it, but I am not sure. Any advice is appreciated. Ed