Fuel Pointer Problem Friends

Hello friends, I have read everywhere but I have a problem that I can not make sense of 308 2011 model vehicle diesel, I bought 80 TL of fuel intermittently, but the needle makes it difficult, does not go above a certain position. and now it is giving full warning as full empty as low fuel, but they say that it has improved in single purchases over 10 lt.

In purchases under 7-8 liters, the needle does not move in my vehicle. When I received 20-20-30 at one time, the pointer did not move. Then I bought a single 50 lira. So what's inside came to where it should be. Since I always get 50 lira after living this, it costs around 10 liters and I have no trouble. I think you can make the tank full.

[QUOTE = OguzhanKucuk61] The needle does not move in purchases under 7-8 liters in my vehicle. When I received 20-20-30 at one time, the pointer did not move. Then I bought a single 50 lira. So what's inside came to where it should be. Since I always get 50 lira after living this, it costs around 10 liters and I have no trouble. I think you can make the tank full. [/ QUOTE]

[QUOTE = Lucas] [QUOTE = OguzhanKucuk61] The needle does not move in purchases under 7-8 liters in my vehicle. When I received 20-20-30 at one time, the pointer did not move. Then I bought a single 50 lira. So what's inside came to where it should be. Since I always get 50 lira after living this, it costs around 10 liters and I have no trouble. I think you can make the tank full. [/ QUOTE]
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What do you mean brother?