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My gas guage showed 3/4 tank full but car wouldn't start... added 5 gallons gas and car started so figured my guage was broken but car at station on took less then 2 gallons so i am not sure what is wrong
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for any vehicle on the market, its only necessary to put enough fuel in the tank to register movement of the fuel gauge.
if you have added enough to see it move just a little bit, that is plenty, if the vehicle does not start, begin test procedures to properly diagnose the reason it will not start.
just a gallon can make most move, but if you have put 3 or 4 gallons is and see no movement, check the gauge circuit including the new float and assembly You have just installed
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
Assuming that the engine can be turned over with the starter, the most likely culprit is it's not getting enough fuel, especially if it's been sitting for 6 months or more. AT YOUR OWN RISK, remove the air duct after the air cleaner and pour a shot-glass full OR LESS of gas directly into the carburetor or throttle body. It should start and at least run briefly. If it does, then add at least 3-5 gallons to the fuel tank. If you've run out of gas, then adding just one gallon is not enough. Today's fuel-injection systems have pressurized fuel lines which need at least a gallon just to fill all the pumps and filters between the tank and the engine. Good Luck, TechJoel
the fuel sender in the tank is probably the problem, they do wear out quick on KIA some models.
the blue part covered in the pic is the sender unit for the fuel gauge.
use a old tooth brush not new as this is to harsh, and clean the strips on the sensor you can take this part off to clean all parts are just clipped on.
A loose connection on the sending unit could cause the problem but also moisture in the tank in cold weather could also be a factor in which i would add fuel line antifreeze to a full tank of fuel..........Hope this helps you out.
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