I am hoping someone has come across this problem and found a solution.

If my 1.8 is parked for just a few minutes, when you try to re-start the engine, while still hot/warm, it will start and then stop again within a second or two. After the third or fourth attempt it will eventually run properly. It is possible to keep it running by using the throttle but as soon as you release the pedal it dies again.

Hard to reproduce the fault as it only does this when it feels like it, dealer can find nothing wrong.

Any ideas anyone?