iv got the same problem now! i have just fitted escort rs turbo engine into my mk2 fiesta and i have no spark there is live to the middle wire on the coil pack but both outer wires are pulsing lives instead of pulsing earths i have checked all sensor but the only sensor i dont have is an amal valve, and this is because i cant find one i have checked all my sensors and my cps 10000 times still no look has anyone had the same problem??