Postby ramishrrr » August 16th, 2014, 6:39 am
locorolla's and anthonemorris's replies make sense.
Maybe the sending unit is bad (float, potentiometer, etc) and tells you the tank is quarter, when it is almost empty. With a vehicle having some age and everyday riding on our roads with corners, bumps, potholes etc., there is lot of movement with the sending unit, as the gasoline sloshes around. It is firstly a mechanical thing. So you could be getting a wrong tank level indication because of wear etc.
Of course, if you are going in the tank to check the sending unit, then it will be wise to check the pump's intake. Some pumps are fitted with a micro-filter in the intake, which can lower the reach to the tank's bottom. If it drops out then with a low gasoline level in the tank, it will be losing suction, hence discharge hydraulic pressure…………………….no supply to the engine's fuel system.
Do the check.
Peace.
RR.