I have a 1992 Plus 4 with Rover M16 engine, with no spark. I have checked the primary coil resistance and it is with in spec as shown in the Haynes manual for the Rover 800i. It does not state a resistance value for the secondary winding. does any one know what the value should be. The value I get with a multi-meter is about 4500 ohms which seems low as most coils seem to show about 8000.