Vauxhall Vectra - Loss of power.

[BorisJohnson0664 0]

We own a 2008 Vauxhall Vectra (Diesel). When taking off in first gear, the vehicle has little power and struggles to build speed until we change gear or accelerate for long enough. This also happens at around 60-70mph... theres just no speed. We have noticed that after filling the fuel tank to the top, the problem goes away. Im thinking fuel pump, injectors, filter maybe? This problem started after we went through a small flood and got a engine management light... water in the system? Or maybe because we didnt bleed the system after we ran out of fuel? Someone suggested the turbo however theres no strange sounds, noises, or smoke coming from the car. However i have noticed a string smell of fuel/emissions coming from the car while idle. Apart from this the car is perfect and everything is fine. Please help!