Car in question is an Audi A6 1.9tdi 2004,

Car was missed fueled with approx £20 of petrol ontop of £5 deisel, then driven for 1/2 mile, car stoped and then wouldn't re start realising the car had been missed fueled stopped trying to start it,

Tank was draind with a vachum type tank sucker and a new filter fitted and 20ltr of fresh deisel, system bleed and car started and run for a few miniutes, then test driven for a few miles.

Now when ever the car is stopped for a few miniutes it becomes difficult to re start has to be turned over for a while, so then decided to change non return valve on top of the fuel filter, but this has no affect.

Anyone have any other ideas or susgetions it deffently feels as if the fuel is draining back, once car is running its fine.

Thanks

jamie