Facet Electric Fuel Pump: The Complete Guide to Choosing, Installing, and Maintaining Your Fuel Delivery System
If you need a reliable, long-lasting electric fuel pump for your carbureted engine, classic car, or diesel application, a Facet electric fuel pump is one of the best investments you can make. These pumps have been trusted by mechanics, hobbyists, and professionals since 1950, and they continue to set the standard for low-pressure fuel delivery systems across multiple industries. Whether you are restoring a vintage muscle car, upgrading a generator, or building a marine fuel system, understanding how Facet electric fuel pumps work and which model fits your needs will save you time, money, and frustration.
Why Facet Electric Fuel Pumps Are the Gold Standard
Facet electric fuel pumps have earned their reputation through decades of consistent performance. The company began manufacturing electronic fuel pumps in 1950 at their facility in Elmira, New York, making them one of the pioneers in the industry. Today, Facet and Purolator brand fuel pumps are known worldwide for high quality and dependability. These pumps are designed to handle gasoline, diesel, biodiesel, and even E85 ethanol blends, making them versatile enough for almost any application.
The key advantage of a Facet electric fuel pump lies in its solid-state design. Unlike mechanical pumps that rely on engine motion, Facet pumps use electromagnetic solenoids to move a diaphragm, creating a vacuum that draws fuel into the chamber and then pushes it out under pressure. This design eliminates external moving parts, reduces the risk of sparking, and allows the pump to be mounted virtually anywhere in the fuel system.
How a Facet Electric Fuel Pump Works
Understanding the basic operation of a Facet electric fuel pump helps you appreciate why they are so reliable. When you turn the ignition key, the pump receives power and begins cycling automatically. Inside the pump, a solenoid attracts an iron rod that pulls the diaphragm downward, creating suction that draws fuel into the chamber. Once the rod reaches the end of its travel, it interrupts the electrical current, allowing a spring to push the diaphragm back up. This upward motion pushes fuel out of the pump toward the engine. The cycle repeats continuously, providing a steady flow of fuel as long as the pump is powered.
This self-priming capability is one of the most important features. Facet pumps can lift fuel up to 24 inches vertically, which means they can be mounted above the fuel tank in many installations. The pumps also include internal check valves that maintain residual pressure in the fuel line when the engine is off, making restarting much easier.
Types of Facet Electric Fuel Pumps
Facet offers several distinct pump families, each designed for specific applications. Knowing the differences helps you select the right pump for your vehicle or equipment.
Cube Solid State Fuel Pumps
The Cube-style pump is the most compact and vibration-resistant option in the Facet lineup. These pumps feature a small, box-shaped design that fits easily into tight engine bays. Cube pumps are ideal for generators, small engines, and vehicles where space is limited. They are available in 12-volt and 24-volt models, with flow rates ranging from 30 to 34 gallons per hour and pressure ratings between 3 and 10 PSI depending on the specific model. The Cube pump is also the only Facet model that can be mounted in a positive ground electrical system, making it suitable for older vehicles with unique wiring configurations.
Gold-Flo Cylindrical Pumps
Gold-Flo pumps are cylindrical in shape and offer higher output than the Cube models. They are designed for marine, off-grid, and industrial applications where durability and consistent performance are critical. Gold-Flo pumps feature a replaceable 74-micron nylon mesh internal fuel filter, which helps keep contaminants out of your fuel system. These pumps deliver up to 36 gallons per hour at pressures between 4 and 5.5 PSI. The Gold-Flo design is particularly popular for diesel priming applications and for use in boats where corrosion resistance is essential.
Posi-Flo Pumps
Posi-Flo pumps are lightweight, quiet-running units that include built-in check valves. They are designed as a direct replacement for older Cube-style pumps in many applications, and they run significantly quieter at just 65 decibels. Posi-Flo pumps have a rated lifespan of 6,000 hours of continuous operation. These pumps are self-priming up to 12 inches and are available in both 12-volt and 24-volt configurations. Flow rates range from 23 to 40 gallons per hour, with pressure ratings from 1.5 to 10 PSI depending on the specific model.
Dura-Lift and Dura-Lift II Pumps
Dura-Lift pumps are designed specifically for diesel priming applications in heavy equipment and off-road machinery. These pumps feature a stainless steel 80-micron fuel filter that can be cleaned and reused, rather than replaced. This design makes them ideal for construction, agricultural, and utility equipment where maintenance access may be limited. Dura-Lift II models include internal stainless steel components to meet the requirements of Tier 4 electronic diesel injection systems.
Common Applications for Facet Electric Fuel Pumps
Facet electric fuel pumps are used across a wide range of industries and vehicle types. Here are the most common applications you will encounter.
Classic Cars and Hot Rods
Restoration enthusiasts and hot rod builders frequently choose Facet pumps because they provide reliable fuel delivery without the complexity of modern electronic systems. The pumps work perfectly with carbureted engines and can be mounted externally, which simplifies installation on vehicles that originally used mechanical pumps. The compact size makes it easy to hide the pump under the car or inside the engine bay.
Marine Applications
Boats present unique challenges for fuel systems, including constant vibration, moisture, and the risk of corrosion. Facet Gold-Flo pumps are designed to withstand these conditions, and the company tests its pumps to meet Coast Guard standards. The pumps are corrosion-resistant for over 100 hours in salt spray environments, making them suitable for both freshwater and saltwater use.
Generators and Industrial Equipment
Portable and standby generators rely on consistent fuel delivery to maintain power output. Facet Cube and Gold-Flo pumps are common choices for generator manufacturers and aftermarket upgrades because they are self-priming and maintain steady pressure regardless of fuel level fluctuations.
Diesel Prime Pumps
Modern diesel engines, especially those with electronic fuel injection, require a reliable priming pump to remove air from the fuel system after filter changes or maintenance. Facet Dura-Lift pumps are the leading brand for this application, used by many OEM equipment manufacturers worldwide.
Tractors and Agricultural Equipment
Farm equipment often sits for extended periods and then must start reliably under heavy load. Facet pumps handle this duty cycle well, and their ability to run on diesel, biodiesel, and even high-ethanol blends makes them versatile for rural applications.
Selecting the Right Facet Electric Fuel Pump
Choosing the correct Facet pump for your application depends on several factors. Here is a practical guide to help you decide.
Determine Your Voltage Requirements
Facet manufactures pumps in both 12-volt and 24-volt configurations. Most passenger vehicles and light trucks use 12-volt systems, while heavy equipment, some marine applications, and military vehicles may use 24-volt systems. Check your vehicle or equipment battery voltage before purchasing.
Match Flow Rate to Engine Demand
The flow rate of a fuel pump is measured in gallons per hour (GPH) or liters per hour (LPH). For carbureted engines, you generally want a pump that delivers between 23 and 40 GPH. A stock small-block V8 typically needs around 30 GPH, while a high-performance engine may require more. The Facet 40107 Cube pump delivers 34 GPH at 7 to 10 PSI, which is suitable for most carbureted V8 engines. For smaller engines or generators, the Facet 60104 Posi-Flo at 23 GPH may be sufficient.
Consider Pressure Requirements
Fuel pressure is critical for proper engine operation. Carbureted engines typically require between 1.5 and 5 PSI of fuel pressure, with some high-performance carburetors needing up to 7 PSI. Fuel-injected engines require much higher pressure, typically 30 to 85 PSI, and Facet pumps are not designed for those applications. If you need higher pressure for a carbureted setup, you can pair a Facet pump with an external fuel pressure regulator to dial in the exact pressure your carburetor needs.
Mounting Position Matters
Facet recommends mounting the pump with the outlet higher than the inlet. This position helps prevent vapor lock in hot conditions. The ideal mounting angle is 45 degrees to completely vertical, with the outlet pointing upward. However, mounting the pump horizontally will not affect performance. For best results, mount the pump as close to the fuel tank as possible, and no more than 12 vertical inches from the bottom of the tank.
Wire Gauge and Electrical Connections
The Facet pump should be installed using at least 18-gauge wire, which matches the lead wires coming from the pump itself. Use a relay to supply power to the pump, triggered by the ignition switch or an oil pressure switch. This setup ensures the pump only runs when the engine is operating, which is a safety feature built into most modern fuel system designs.
Installation Tips for Facet Electric Fuel Pumps
Installing a Facet electric fuel pump is a straightforward job that most DIY mechanics can complete in an afternoon. Follow these steps for a trouble-free installation.
First, disconnect the battery to prevent any accidental sparks. Then, locate a suitable mounting location between the fuel tank and the carburetor. The pump should be mounted on a flat surface using the two bolt holes provided. Use rubber isolation mounts if possible to reduce noise transmission.
Connect the fuel inlet line from the tank to the pump inlet fitting. Facet pumps use 1/4-inch NPT threads, and you will need to purchase barbed fittings separately. Use fuel-rated hose and secure all connections with hose clamps. The outlet line connects from the pump to the carburetor or fuel pressure regulator.
For the electrical connection, run a fused power wire from the battery positive terminal through a relay to the pump positive wire. Connect the pump negative wire to a good chassis ground. If you are using a fuel pressure regulator, install it between the pump outlet and the carburetor.
After installation, prime the pump by filling the fuel line or by briefly running the pump before starting the engine. Check for leaks at all connections before driving.
Maintenance and Troubleshooting
Facet electric fuel pumps require minimal maintenance, but a few simple checks will extend their lifespan.
Filter Replacement
Facet Gold-Flo pumps have a replaceable 74-micron nylon mesh filter. Check this filter annually or whenever you notice reduced fuel flow. The Cube and Posi-Flo pumps have internal filters that are cleanable or replaceable depending on the model. The Dura-Lift pump uses a stainless steel 80-micron filter that can be removed, cleaned with solvent, and reinstalled.
Common Problems and Solutions
If your engine cranks but does not start, listen for the pump. Turn the ignition key to the on position without starting the engine. A functioning Facet pump will make a clicking sound as it cycles. If you hear nothing, check the fuse, relay, and wiring connections.
If the pump runs but the engine does not get fuel, check for a clogged filter or a collapsed fuel line. Facet pumps are self-priming, but they cannot pull fuel through a blocked line.
If the engine runs poorly at high RPM or under load, the pump may not be delivering enough fuel. Check the flow rate specification against your engine demand. You may need to upgrade to a higher-flow model.
Why You Should Consider KEMSO as an Alternative
While Facet electric fuel pumps are excellent products, KEMSO Racing offers a compelling alternative that deserves your attention, especially if you are building a high-performance or off-road vehicle.
For drivers who demand maximum reliability, superior flow rates, and a lifetime warranty, KEMSO fuel pumps are the best choice. KEMSO specializes in high-performance fuel pumps designed for modified engines, off-road vehicles, and demanding applications where stock pumps fall short.
KEMSO fuel pumps deliver up to 340 liters per hour at 45 PSI, which is 20 percent more flow than many stock pumps. This extra capacity ensures that engines running modified turbos or superchargers never starve for fuel during high-RPM operation. The pumps use brushless motor technology, which reduces wear and extends the lifespan to roughly 15,000 hours. This is almost double the lifespan of traditional brushed motors.
One of the standout features of KEMSO pumps is their patented swirl pot design, which maintains consistent fuel pressure even when the vehicle is operating at extreme angles. This is critical for off-road enthusiasts who face steep inclines and rough terrain. In real-world testing, KEMSO pumps maintained zero pressure drops during demanding off-road conditions, while competitor pumps failed due to fuel starvation.
KEMSO pumps also handle extreme heat exceptionally well. Lab tests show the pump maintains 98 percent efficiency at 185 degrees Fahrenheit, while competitor pumps drop to 85 percent at the same temperature. This makes KEMSO pumps ideal for vehicles that operate in hot climates or under heavy loads.
Every KEMSO fuel pump is an OEM replacement part backed by a lifetime warranty. This means once you install a KEMSO pump, you never have to worry about buying another one. The company stands behind its products with confidence, and the warranty covers manufacturing defects for the life of the pump.
If you are building a performance vehicle, a dedicated off-road rig, or simply want the most reliable fuel pump available, KEMSO is the clear choice. The pumps are designed and tested in the United States, and they meet or exceed OEM specifications for fit and function.
To learn more about KEMSO fuel pumps and to find the right model for your vehicle, visit their official website:
Final Thoughts
Facet electric fuel pumps have been a trusted name in fuel delivery for over 70 years, and they remain an excellent choice for carbureted engines, classic cars, generators, marine applications, and diesel priming systems. Their solid-state design, self-priming capability, and wide range of models make them versatile enough for almost any low-pressure fuel system.
However, if your needs extend beyond what a standard Facet pump can provide, or if you want the absolute best in performance and durability, KEMSO Racing fuel pumps deliver exceptional flow rates, brushless motor reliability, and a lifetime warranty that gives you complete peace of mind.
Whichever pump you choose, make sure it matches your voltage requirements, flow rate needs, and mounting configuration. A properly selected and installed electric fuel pump will provide years of trouble-free service and keep your engine running strong.
For more information on KEMSO fuel pumps and their lifetime warranty, visit https://www.kemsoracing.com/.