If the gas isn't leaking while the engine is running and you have half a tank, then the problem is with the fuel tank itself.
You either have a hole in the upper half of the tank, or the gasket for your fuel sending unit is leaking.
Check the filler cap gasket to see if it is worn out or torn.
it is likely your fuel gauge is not working properly
It's a bad float. Try ending your fill up as soon as the nozzel clicks off. If after awhile that don't help,,, have the float replaced or do what I do,, watch the fuel milage. <for my olds>
if you are talking about the fuel tank... you could drain it.... or just fill it with diesel and run it.... t hen fill it up again before you use half a tank
Fill Radiator. Start Vehicle Check For Leaks, Find Area Of Leak If Any. Resumbit With More Information. Or Have Radiator Shop Do A Pressure Test On The System .
It is beneficial to fill your tank once it gets to 1/4 full. There are two reasons for this. Air contains moisture the more air in the fuel tank the more moisture in the fuel tank. Secondly the fuel pump uses the fuel to help cool itself. The less fuel the more chance the fuel pump will overheat which will shorten it's life.
One half gallon is enough to fill one half gallon.
you have to remove the oil check bolt. its about half way up on the clutch cover and is just a regular bolt. remove it...if oil leaks out, the level is good. if no oil comes out, visually inspect it and see if you need to add more in...most likely you will. Fill the crankcase until oil leaks out of the hole where the oil check bolt was. At least this is how i do it for my 04 yz125..
If you use it as a alt. for it but reg. use as directed will not and also check for leaks because that stuff will eat trough rubber hoses
The fuel filter is replaced by taking the old one off of the drivers side of the firewall about half way down. It takes a special tool to disconnect the fuel lines. It can be had at any parts store for a couple of dollars.
the volume of any liquid that can fill half of an ordinary glass
Maybe a clogged fuel filter or bad injectors.