Hi, got this one in running on three cylinders when hot stored codes 469A; valve for pump nozzle cylinder 1 circuit defective and 412D; combustion failure. We have done relevant test on unit injector wiring from multiplug to injector (in cambox) seems to check ok, we are going to swop unit injector with No2 cyl. see if it moves but wondered if anyone had any wiring problems, seem to remember reading about wiring problems, thanks Rob.