If you have never put a fuel line cleaner in your car before you can be unpleasantly surprised. The fuel cleaner (often something like xylene) dissolves crud that can deposit on the interior of the fuel system. If that crud all loosens up and moves to your fuel filter it will clog it up.
If your fuel system is so loaded with crud that it stops your fuel gauge sending unit in the gas tank from sending a good signal, the tank is really loaded. Yes, it can clean a dirty sending unit but, if it is that dirty, the filter will clog and the fuel won't flow.
Go ahead and try it. It might help...expect that you will need to change the filter before long.
Most fuel gauge problems are the result of a faulty fuel gauge sending unit located in the fuel tank.
Take out the fuel gauge and fish for the magnet inside the fuel tank. Then disassemble the fuel gauge to replace the broken magnet. Reassemble and replace. Done...
I use a fuel pressure gauge.
Whether or not a march fuel gauge will fit a B13 tank depends on the size of the march gauge. You should be able to find a march gauge that will fit on a B13 tank.
On a car, there is a float inside your gas tank. It is attached to a switch that sends the empty.....full signals to your fuel gauge.
It is to prevent the fuel from sloshing back and forth. Fuel sloshing can cause the fuel gauge to be erratic.It is to prevent the fuel from sloshing back and forth. Fuel sloshing can cause the fuel gauge to be erratic.
I had the same problem. What is happening is there is varnish from the fuel on the potentionmeter, and making a bad connection. I used fuel injection cleaner for a few tanks and the problem has never come back.
The fuel sending unit is sticking, or the wiring to the gauge is loose. These are the two most common causes of an erratic gauge.
Fuel Sending Unit is bad. It is a common problem in these vans!
fuel sending unit in fuel tank
It Seems like you may have a fuel sending unit problem
drop the gas tank and change the sending unit
Maybe bad sending unitBad/Damaged fuel sending unit. Bad/damaged wiring. Locate the wires of the fuel sending unit at the fuel tank and unplug them, see if that makes the fuel gauge to be stable (may be up all the way of down all the way, but must stop moving).If the gauge still acts erratic chances are your wiring is wring of finally (but not common) the guague itself on the dash it's damaged..
The float is stuck. Try a fuel cleaner or additive.
Chevy sells a tank additive that removes corrosion from the sending unit that uses resitance to gage how much fuel in tank. Check your local dealer for the additive, the gage usually shows an erratic reading due to corrosion, bad fuel quality at the pumps.
There is no relay for the fuel gauge. It is powered directly off the ignition switch. The fuel pump relay is behind the driver in the engine compartment on the fire wall just forward of the air cleaner.
In most old cars such as a late 80's or 90's Buick Century, the fuel is gauged by a float within the tank rather than sensors attached to the tank. With this being the case, the fuel sloshes around in the tank while driving (especially when accelerating, braking, or turning) so the float gives an erratic reading.