kingmikeyuk

Hello there, wanted to check the coil packs, i suspect one cylinder not firing properly, the primary coil resistance should be 0.7 ohms measured between the 2 supply wires, the secondary coil should be 13.8 k ohms measured between the supply wire 1 and the spark plug contact (according to the manual), primary coil is ok , i can not get any reading for the secondary coil ( on any of them ) , the wiring diagram is not clear is the secondary coil grounded through the primary coil or through the bolt that holds the coil in place.