afaik, blue - cold start valve, brown, thermo time switch, green knock sensor, cant mind any other colours yellow i cant remember where that went. doh. im havin starting probs too, my car doesnt move much an come start time it jus turns over, needs someone to hold metering flap down, but once started runs a lil bit rough, then warms up its perfect. think eithe rmy cold start valve or thermo time switch is gubbed too !