Hi All,
Well i've started to do a head strip today after checking the spark plugs and found that 2 off them have a slight bit of rust at the end of the threads.
Removing parts and taking photos etc got to wiring loom and found that the LH side knock sensor is not connected as if the wires have been pulled out sometime in its life.

Just read the RAVE book and it says that it can adjust the ignition timing for that side?
My Question is. What's faults can this cause?
I will find a new plug and rewire when putting back together

I don't think it will cause any faults as such, it just won't retard the timing if it does start knocking so could do damage to the engine.