How to install an electric fuel pump on a carbureted engine?

Have you ever wondered how to install an electric fuel pump on a carbureted engine?

Well, we have the answer! You might not know this but installing an electric fuel pump is super easy. All you need is a few tools and some patience. It’s really as simple as 1-2-3.

This blog post will help you install an electric fuel pump on your carbureted engine. I’ll cover the basics of how to wire up the system, and what parts are needed for installation.

Let’s get started!

You must have a good electrical connection when using an external electric fuel pump because it converts 12 volts of DC power from your vehicle’s battery into a high-pressure, regulated gas to feed your engine.

If you’re not comfortable with wiring or electronics in general, this might be a job best left to someone who knows their way around electricity – but we’ll still try to make this as easy as possible!

If you care about the performance and longevity of your car then read on! There are many benefits of installing an external electric fuel pump including increased performance. Increased fuel pressure will help your engine run smoother and deliver better power.

If you’ve driven a modern car before then the fuel system is likely electric, but many older cars still use carburetors – and they are left in charge of pressurizing the gas with only their internal pump (that relies on vacuum from the engine). A tiny little pump that is the size of a hockey puck simply isn’t going to be able to pressurize fuel from your tank properly.

The main advantage is that with an electric fuel pump, you’re in control of how much pressure you want the fuel to have – and thus how much performance your car should be getting!

The fuel pump is an integral part of your car’s fuel system. It is responsible for maintaining proper pressure in the fuel tank. If you drive a carbureted car then you’ll have an internal pump but if you drive a fuel-injected car, then your electric fuel pump will be fed via an external line from the engine’s computer.

So, how to install an electric fuel pump on a carbureted engine?

The installation process is very simple.

  • First, you need to find the fuel pump and carburetor mounting location on your engine.
  • Next, remove the gas tank from the vehicle and place it on a flat surface to work with.
  • Disconnect any lines or hoses that are coming off of it before proceeding with the next step.
  • Now, trace around your fuel pump’s housing onto a piece of paper and cut out this shape so that you have a template for drilling holes in your gas tank later.
  • You will also need to drill some new holes into your carburetor’s intake manifold as well if there aren’t already any present – these will be used when bolting down the two pieces together during assembly time.
  • After marking all four corners of the rectangle, go ahead and make a small hole in each corner where you have marked.
  • Now you can remove the pump’s electric cord from your vehicle and cut off the fuel lines coming out of it.
  • You will need to use crimping tools to prepare your gas line (3/8”) for installation on the new fuel pump.
  • Remove the gas line from your old fuel pump and slide a new 3/8″ gasoline line onto it for a more secure fit.

The next step is to drill holes into the side of your gas tank, at specific points that will allow you to bolt down both the external fuel pump as well as the carburetor intake manifold together – this will be discussed in greater detail below.

Then, it’s time to remove one of your car’s rubber gaskets from a hole in its metal body so that you can install an external fuel shutoff valve instead (note: if there is no hose on the other end of this stub sticking out of your tank then skip this step). This valve will help prevent fuel from leaking out of your tank.

You will also need to remove the gas line assembly that is located in your gas tank and replace it with a longer piece (3/8″?) and then connect the new metal fuel shutoff valve in place – using a wrench or pliers.

Now, you can go ahead and install new zinc-plated screws into all four holes that were made earlier on the top of your car’s gas tank.

These should be tightened down with a flathead screwdriver or hex key if they are too tight for regular-sized wrenches.

After this, simply put the external electric fuel pump housing onto its designated location within the tank (the same spot as where your old carburetor would have been located) and tighten it down with some of the new hardware that was just installed.

Then simply tighten down the carburetor intake manifold to make sure that it is not going anywhere, either.

Now all you have left to do is install a fuel line from your new electric fuel pump so that you can once again remove any restrictions on its flow – this will give you more power!

The last step is to go ahead and reinstall your gas tank back into your vehicle’s frame – paying attention to all gasket locations before tightening everything up securely. Make sure that the external shutoff valve (and wires) are not getting pinched for a leak-free installation.

Now go ahead and reattach all of the lines that you previously removed earlier during your gas tank removal project.

Now, make a final check on everything else to see if there are any leaks or anything out of place before starting up your engine once again.

If you’re not sure about installing an electric fuel pump yourself, then take it somewhere that offers automotive repair services like AutoZone for professional help.


That’s all for now. I hope this post was helpful, and if you have any questions or comments please let me know below in the comment section! 

There are a few things to take into consideration when installing an electric fuel pump on your carbureted engine.

First off, make sure that you have a good electrical connection because it converts 12 volts of DC power from your vehicle’s battery into high-pressure regulated gas to feed your engine.

Secondly, remember that electricity travels through metal easily but not so much with plastic or rubber parts – which is why we recommend using copper tubing wherever possible (and making sure it’s securely fastened) since its conductive properties will help keep those electrons flowing freely back to the battery while preventing any gas leaks or corrosion from forming.

Thirdly, because there is a high chance that this hose will eventually run across the path of your car’s exhaust system (which can get very hot), make sure to use something like braided steel hosing so that it does not melt and leave you stranded on the side of the road with an expensive repair job. 


What is an electronic carburetor?

Electronic carburetors are a technology that brings the convenience of gas savings to those who prefer driving electric. This technology is reversible, meaning it can be used for either gasoline or electricity depending on what’s being produced where you live.

Can you run a carburetor with an electric fuel pump?

No! But in fact, it is possible to run a carburetor with an electric fuel pump. All you have to do is change the shape of the restriction in front of your intake valves so that it draws liquid from the bottom of your gas tank instead of pressurizing gas and then drawing it through a restricted hole. This lets you use an electric fuel pump without having to replace any other parts on your car or truck.

Which is better EFI or carburetor?

Carburetors are better because EFI is innately flawed. The fuel that enters the carburetor is not a uniform mixture, and the density of this mixture changes with altitude and humidity.

In contrast, an electronic fuel injection system provides good atomization of the fuel into very tiny droplets since it injects fuel at only one or two points. Some engines respond well to variable air-to-fuel ratios but most need a more constant ratio. A carburetor mix air with the right amount of `o2 for optimal burn giving good mileage in varying conditions (e.g., city driving versus hills)

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