Help please, My 04 Discovery has developed a starting problem. It doesn't want to start first thing in the morning. You can try up to six times before she fires up. It then runs fine for the whole of the trip. This started happening back in May. Originally it was thought to be air leaking in around the injectors but this has been more or less ruled out. I've recently had a non return value fitted that was stuck open but if anything this has made the problem worse. No faults are showing up on the computer diagnostics. Its now started being awkward about starting after being left for a relatively short time!