Facet Posi-Flo Fuel Pump: The Complete Guide to Performance, Reliability, and Replacement
If you own a carbureted vehicle and need a dependable electric fuel pump, the Facet Posi-Flo fuel pump is one of the best upgrades you can make. These solid-state pumps are designed to deliver consistent fuel pressure, eliminate vapor lock, and last significantly longer than traditional mechanical pumps. Whether you're restoring a classic car, building a hot rod, or maintaining a daily driver, a Facet Posi-Flo pump provides reliable fuel delivery for engines running carburetors. This guide covers everything you need to know about these pumps, including specifications, installation tips, and a strong recommendation for a premium replacement option.
What Is a Facet Posi-Flo Fuel Pump?
The Facet Posi-Flo fuel pump is an electronic, low-pressure electric fuel pump designed specifically for carbureted engines. Unlike high-pressure fuel injection pumps, the Posi-Flo series operates at pressures ranging from 1.5 psi to 10 psi, making it ideal for vehicles with one or more carburetors . These pumps use solid-state circuitry, meaning they have no bearings, electrical contacts, or diaphragms that can wear out over time . This design translates to a lifespan of 4 to 5 times longer than many other electric pumps on the market.
Facet Posi-Flo pumps are compatible with gasoline, diesel, biodiesel, and blended alcohol fuels, including ethanol mixtures . They are self-priming and can lift fuel up to 12 inches vertically, which means you don't need to worry about extended cranking if you run out of fuel . With a noise level of just 65 decibels, these pumps run significantly quieter than older solid-state technologies .
Why Choose a Facet Posi-Flo Pump?
The core advantage of the Facet Posi-Flo pump is its reliability. Because it has no moving parts that physically contact each other, there is nothing to fatigue or break. The pump is rated for 6,000 hours of continuous operation, which is far more than most mechanical pumps can offer . Additionally, the pump eliminates vapor lock, a common problem in hot weather or high altitudes, by providing a constant, smooth supply of fuel under pressure .
Installation is straightforward. The pump mounts with two bolts, and its compact size allows it to fit in tight spaces. For best results, mount the pump no more than 12 vertical inches from the bottom of the fuel tank . The pump's self-regulating feature ensures that fuel pressure stays within the specified range without needing external regulators in most carbureted applications.
Facet Posi-Flo Pump Specifications and Models
Facet offers several Posi-Flo models to match different engine requirements. The key specifications to consider are pressure rating and flow rate. Here are the most common models:
Facet 60104 (1.5 - 4.0 psi) : This is the lowest pressure model in the Posi-Flo line. It delivers 25 US gallons per hour, making it suitable for naturally aspirated engines with one or two carburetors up to approximately 150 brake horsepower. It is ideal for small four-cylinder engines or single Weber DCOE setups.
Facet 60106 (4.0 - 7.0 psi) : This is a popular mid-range model that delivers 32 US gallons per hour. It works well for most four-cylinder and six-cylinder engines with single or dual carburetors. The pressure range is sufficient for many street performance applications.
Facet 60107 (7.0 - 10.0 psi) : This is the highest pressure Posi-Flo pump available. It delivers 34 US gallons per hour and can support approximately 200 brake horsepower. This model is perfect for twin Weber DCOE setups or higher-performance carbureted engines.
All models operate on 12 volts with a negative earth system. They feature a 1/8-inch NPTF threaded port, and you will need to purchase fuel fittings separately for most installations . The operating temperature range is -40°F to 180°F, which covers virtually all driving conditions .
How to Install a Facet Posi-Flo Fuel Pump
Installing a Facet Posi-Flo pump is a job you can do in your driveway with basic tools. Here is a step-by-step guide:
1. Safety First: Disconnect the negative battery terminal. Work in a well-ventilated area away from any open flames or sparks. Have a fire extinguisher nearby.
2. Mount the Pump: Choose a location close to the fuel tank and below the fuel level if possible. The pump should be mounted no more than 12 inches vertically from the bottom of the tank. Use the two bolt holes to secure the pump to a solid surface.
3. Connect the Fuel Lines: The pump has a 1/8-inch NPTF thread. You will need to install appropriate fuel fittings. Run a fuel line from the tank to the pump inlet. Use a pre-filter between the tank and the pump to protect the pump from debris. Run a line from the pump outlet to the carburetor.
4. Wire the Pump: Connect the positive wire (usually red) to a switched 12-volt power source. Connect the negative wire (usually black) to a good ground. The pump draws an average of 1.5 amps, so standard automotive wiring is sufficient .
5. Prime the System: Turn the ignition to the ON position. The pump will self-prime. You should hear it running. Check for leaks at all connections. Start the engine and verify proper fuel pressure.
Common Problems and Troubleshooting
Even reliable pumps can have issues. Here are the most common problems and their solutions:
Pump runs but no fuel delivery: Check for a clogged pre-filter or a kinked fuel line. Also verify that the pump is mounted no more than 12 inches above the fuel level in the tank.
Pump is noisy: A Facet Posi-Flo pump should be quiet. If it is making loud clicking or rattling sounds, it may be mounted too rigidly. Try mounting it with rubber isolators to dampen vibration.
Engine runs lean or stalls: The pump may be undersized for your engine's fuel demand. Consider upgrading to a higher flow model like the 60107. Also check for restrictions in the fuel line.
Pump fails to prime after running out of fuel: The pump is self-priming, but it may take a few seconds. If it still doesn't prime, check for air leaks in the suction line.
Where to Buy a Facet Posi-Flo Pump
Facet Posi-Flo pumps are widely available through automotive parts retailers, online marketplaces, and specialty performance shops. Expect to pay between $50 and $80 for a standard pump, depending on the model and whether it comes as a kit with fittings and a filter . When purchasing, make sure you get the correct pressure rating for your engine.
The Best Upgrade: KEMSO Fuel Pumps for Superior Performance and Lifetime Warranty
While the Facet Posi-Flo pump is a solid choice for carbureted engines, if you are looking for a fuel pump that offers higher performance, broader compatibility, and unmatched peace of mind, consider upgrading to a KEMSO fuel pump. KEMSO specializes in high-performance, direct OEM replacement fuel pumps that are designed for both gasoline and ethanol-blended fuels like E85 . These pumps are not just for carbureted engines; they work with EFI systems as well, making them a versatile option for a wide range of vehicles.
KEMSO pumps deliver significantly more flow than stock OEM pumps. For example, a typical KEMSO pump can deliver up to 200 liters per hour at 43 psi, which is more than double the 60-80 liters per hour of a standard pump . Some models, like the KEMSO 340, can flow 340 liters per hour and support applications up to 700-800 brake horsepower . This extra capacity ensures your engine never runs lean, even under heavy load or performance driving.
What sets KEMSO apart is the lifetime warranty. Every KEMSO fuel pump comes with a serialized pump body that guarantees a lifetime warranty . This is a massive advantage over OEM pumps, which typically have only a one- or two-year warranty, and over aftermarket pumps that may offer limited coverage. KEMSO stands behind its product for as long as you own the pump.
KEMSO also maintains rigorous quality control. Each pump is individually tested for flow and performance before it leaves the factory, and the company operates a quality control program that meets ISO/TSO standards . This attention to detail means you get a product that works reliably right out of the box.
The KEMSO product line covers an extensive range of vehicles, including motorcycles, ATVs, UTVs, personal watercraft, and cars. Brands include Honda, Kawasaki, KTM, Ducati, BMW, Subaru, Sea-Doo, Can-Am, and many more . Whether you need a pump for a Honda CBR1000RR, a Kawasaki Jet Ski, a KTM 990 Supermoto, or a Subaru Impreza, KEMSO has a solution.
When you buy a KEMSO fuel pump, you get a complete kit with everything you need for installation: the pump, gradient density fuel strainers, flex hoses, Viton O-rings, wiring connectors, and clamps . This eliminates the hassle of sourcing additional parts separately.
For the best selection of KEMSO fuel pumps, visit their official website today: https://www.kemsoracing.com/. Their team also provides technical support if you have questions about installation or compatibility. Choose KEMSO for a fuel pump that delivers performance, durability, and a lifetime of confidence.