Apologies but my return key isn't working on my laptop. I have a 59 plate Zafira 1.6 petrol. I suddenly had a loss of power the other day. I performed a peddle test and found that I have a misfire on cylinder 3. I replaced the spark plugs. I had a spare camshaft sensor so replaced the front one first, fault still active, swapped the back one out with the front one, fault still remains. I have tested the coil pack with a standard ohmmeter, I do not have a megger. The coil pack tested ok, I understand that the coil pack may still be faulty but I am unable to test it properly. I also have a spare crankshaft sensor. I am having trouble locating it in the engine. Could it be the crankshaft sensor? If so, as I have one, where is it located? Is there anything else it could be? If so, what would the recommendations be? Thank you.