A long known about problem in our car is the accelerator cable. Unlike new cars, in our Toyota an actual cable connects the gas pedal to release the gasoline. So the gas pedal has a cable connected to it with a screw that connects to the carburetor. When you step on the gas pedal the cable is pulled and opens up a little flap to allow gas into the carburetor.
We have often had problems with the cable fraying. Read More