84 EZGO Gas no gas in fuel line

[danghoff]

Stopped running and no fuel in fuel line

[golfcartg]

The fuel system in your cart is designed to deliver a steady supply of fuel from the tank to the carburetor, where it’s mixed with air and fed into the engine for combustion. This system relies heavily on a vacuum fuel pump, which uses the engine's crankcase pressure to create the suction needed to pull fuel from the tank and send it to the carburetor. If you’re experiencing no fuel in the fuel line, there could be several issues at play.

First, start by checking the fuel lines for any signs of wear or cracks. Over time, these lines can become brittle or damaged leading to air leaks. Even a small crack can prevent the vacuum pump from creating the necessary suction to draw fuel from the tank. Picture drinking soda from a straw with a hole in it. If the fuel lines are damaged, they need to be replaced immediately. This could be the root cause of your problem, as any air leaking into the system would break the vacuum seal and stop fuel from flowing correctly.

Next, focus on the vacuum fuel pump itself. This pump operates by using the engine’s crankcase pressure to create a vacuum that pulls fuel from the tank and pushes it towards the carburetor. To test if the fuel pump is working correctly, disconnect the fuel line that leads to the carburetor and crank the engine over. You should see a steady pulse of fuel coming out of the line. If you don’t see any fuel or if the flow is weak, it’s possible that the pump isn’t functioning correctly.

A common reason for the fuel pump to fail is a lack of sufficient crankcase pressure, which is necessary to generate the vacuum. This pressure is created by the engine’s internal movements, and it’s transmitted to the fuel pump. If the crank seals are worn or leaking, the crankcase won’t be able to maintain enough pressure to activate the pump effectively. This would prevent the fuel pump from generating the necessary vacuum to pull fuel from the tank leading to the issues you’re experiencing. In this case, the crank seals would need to be inspected and possibly replaced.

Additionally, it’s important to consider the fuel filter. If the filter or fuel lines are clogged, it could restrict fuel flow, even if the pump and lines are in good condition. A simple replacement of the fuel filter or cleaning the lines could solve the problem if this is the case. If you have any questions feel free to ask!

[AndreiB]

Look into the mechanical pump that's on the main line from the gas tank