What to do if your fuel tank switch is bad?

If you do have power to the valve, unless theres a bad connection, the valve is bad. You can try tapping on it, lightly (dot beat it up) to see if it will free up, but once they quit, they’re done. To get to the fuel in the full tank, just swap the hoses that go into the valve from the tanks, just remember thats what you have done.

Why is the switch on my dual gas tank not working?

It could be the switch valve or the actual switch it self that isnt working. Ive had some trouble with my dual gas tanks as well. The gas gauge wont read. Even when i change it from side to side. The right gas tank is empty and when i change it to that it eventually dies.

What is the problem with my gas tank?

Fuel pickup screen in the tank is clogged. The sending unit for the fuel gauge is bad and the tank is empty but the fuel gauge falsely shows it’s not. I would start by determining if it is an electrical or mechanical problem.

What causes gas tank to loose oil pressure?

Engine oil pressure activates the switch on the top back of the engine. Contacts in this switch close and send 12 volts to the fuel pump. The system will stay in this configuration until you turn the key off or the engine looses oil pressure.

What happens when you turn off the relay on a gas tank?

Contacts in this switch close and send 12 volts to the fuel pump. The system will stay in this configuration until you turn the key off or the engine looses oil pressure. The 3 second operation of the fuel pump by the relay is to prime the fuel system, this makes the engine easier to start.

Can a bad fuel pump cause a bad gas tank?

These are notorious for getting corroded and falling off. Bad fuel pump. A stock 87 fuel system will have a pump in each tank. The hose that connects the output of the fuel pump to the metal supply line going out of the tank has gone bad. (Inside the gas tank). This is another frequent problem.