I filled my car the other day and the petrol gauge increased as normal. Now when I start the car the gauge gets stuck just above empty. I know there is no leak but I am now not going to know when I am running low until the last minute. Is there anything I can do? the car is a paugoet 206 (not a 405 - 206 was not in the list)

If your fuel gauge is showing you in accurate readings this is normal to all vehicles that are not used to fill-up gas full regularly but sometimes the cause of the inacuracy is due to faulty float valve in the gas tank you need to replace it

could be stuck or the sender unit has failed and most likely cause is the float has filled with petrol but without a removal of the sender unit and an inspection its only speculation

take the sender unit out and check the float ,sounds like its full of petrol and not floating giving a reading of empty

most likely the sender in the gas tank is bad.

Sounds like a broken gas tank sensor in the gas tank. The sending unit has probably gone out.

sounds like the float is either got a hole in it and is full of fuel, or the whole float assembly is seized in the empty position.
was the car left for 5 weeks empty of fuel?

Hi, try to hook up the hho gas hose into a vacuum line of the crank case (with t-connector) NOT directly b4 the turbo. That might help. Its not getting enough vacuum to "pull" the gas from the cell. How much hho production do you get right now? Greetings, ****

well the pump for the washer solvent is probably fried (unless there is no solvent in the resovoir). and on the gas gauge the way that works is there is a little float handle that goes up and down with the gas. when you put gas in this little float floats on top of the gas and this is how your car knows how much gas you have it sounds like it is getting stuck and will probably need to be replaced

Do you mean that the gauge registers as empty, even after the tank is filled? Probably the sending unit needs to be replaced (it's in the tank, likely partially attached to the fuel pump).

I had same problem with petrol gauge bouncing around all over the place, full tank, half a tank and nearly empty in the space of 10 miles.

I knew that if I filled the tank I would get approx 200 miles for half a tank so I did that for a while and just kept topping up. Audi testing it and the fuel sensors in the tank had to be replaced. I'm afraid its the only permanent solution!