My daughter's car has a miss-fire which appears worse when cold. The plugs and leads/coil pack have been replaced together with air filter etc. There are no fault codes on the ECU and the tdc sensor has been checked. Removing the Lambda sensor doesn't make any difference so it's probably not that. The compression is good on all cylinders and there doesn't appear to be any induction system leaks. The only thing left is the injectors - anybody have any suggestions? The mileage is 88K with a full service history and the cambelt was changed at 70K.