EVIL ENERGY Carburetor Fuel System Kit 12V Electric Fuel Pump 5-12PSI Regulator 20FT PTFE/NBR Hose

FAQs about EVIL ENERGY Carburetor Fuel System Kit

Q: Will this complete carburetor fuel system kit fit my specific vehicle?
A: This is a universal kit designed exclusively for carbureted engines. It is not a direct 'bolt-on' for a specific model. It is the ideal solution for classic cars, hot rods, and muscle car builds where you are creating a custom fuel system. It is NOT compatible with modern EFI (fuel-injected) systems.

Q: Which fuel line should I choose: the 6AN PTFE FUEL LINE KIT or the NBR Fuel Hose Kit?
A: This depends entirely on your fuel type:

• Choose the 6AN PTFE FUEL LINE KIT if you are using E85, ethanol, or alcohol-based racing fuels. The PTFE Fuel Line inner core is the only material that can safely handle these corrosive fuels long-term.
• Choose the 3/8-inch NBR Fuel Hose Kit if you are only using standard gasoline or diesel. Do NOT use the NBR hose with E85 fuel.

Q: Does this electric fuel pump for carburetor replace my factory in-tank pump?
A: No. This kit includes a gear-type electric fuel pump for a carburetor that is designed for external mounting (e.g., on the frame rail). It does NOT replace a factory in-tank pump. For best performance, this external pump should be mounted close to the tank and below the fuel level.

Q: What pressure should I set the Fuel Pressure Regulator for the carburetor to?
A: Our adjustable Fuel Pressure Regulator for carburetor has a 5-12 PSI range. Most common carburetors (like Holley, Edelbrock, etc.) require low pressure, typically between 5.5 and 7.5 PSI. Always check the manufacturer's specifications for your specific carburetor to prevent flooding (pressure too high) or fuel starvation (pressure too low).

Q: What else do I need to buy? Does this kit include a filter or relay?
A: This kit contains our three core components: the 12V electric fuel pump, the adjustable fuel pressure regulator, and your choice of either the 6AN PTFE Fuel Line Kit or the NBR Fuel Hose Kit. A fuel filter and relay are not included. We strongly recommend installing a 100-micron fuel filter (sold separately) before the pump to protect it from debris.

Q: Is this fuel pump kit designed for carbureted or EFI systems?
A: This kit is designed for compatible carbureted fuel systems. It combines an external electric fuel pump with an adjustable 5–12 PSI fuel pressure regulator. It is not intended to replace a high-pressure EFI fuel system.

Q: What is included in the carburetor fuel pump kit?
A: The selected package combines a 12V external electric fuel pump, a 5–12 PSI adjustable fuel pressure regulator with gauge, and either a 20FT 6AN PTFE fuel line kit or a 20FT 3/8-inch NBR fuel hose kit. Included fittings and hose hardware depend on the selected configuration.

Q: Does the electric fuel pump require a fuel pressure regulator?
A: Yes. The pump has a published closed pressure of 14 PSI, which may be higher than the pressure accepted by many carburetors. Use the included regulator and adjust the outlet pressure according to the carburetor manufacturer’s specification.

Q: What is the adjustable range of the fuel pressure regulator?
A: The fuel pressure regulator for carburetor applications can be adjusted from 5 to 12 PSI using the set screw. The included pressure gauge allows the regulated pressure to be checked during setup.

Q: What is the published flow rate of the electric fuel pump?
A: Published flow is approximately 320–345 LPH at 7–9 PSI and 345–370 LPH at 10–11 PSI under the stated electrical test conditions. Actual delivery can change with voltage, hose restriction, filter condition, fuel type, fittings, and installation layout.

Q: Can I choose the regulator setting based only on the pump flow?
A: No. Set the regulator according to the pressure required by the carburetor, not only the pump flow rating. Excessive pressure may cause fuel leakage or flooding, while insufficient pressure may cause hesitation or fuel starvation under load.

Q: What is the difference between the PTFE and NBR fuel line options?
A: The 6AN PTFE fuel line is the preferred option when greater chemical and temperature resistance is required, including verified ethanol or E85 applications. The 3/8-inch NBR hose is intended for compatible gasoline, diesel, oil, and conventional fuel-system applications. Confirm the selected hose before ordering.

Q: Can the complete kit be used with E85 or ethanol fuel?
A: Only when every selected component is compatible. The regulator lists gasoline, diesel, E85, and ethanol or alcohol compatibility, but the NBR hose option should not automatically be treated as E85 compatible. Select the PTFE hose configuration and verify the pump, seals, gauge, fittings, tank, and carburetor before use.

Q: Can this kit be used with gasoline or diesel?
A: The pump specifications list gasoline and diesel, and the regulator also lists both fuels. However, the complete system must be checked for fuel compatibility, including the selected hose, seals, fittings, filter, tank, and carburetor or fuel-delivery component.

Q: Will the included fittings connect every hose option directly?
A: Do not assume that every fitting shown works with every configuration. The current package information lists pump adapters, AN6 regulator fittings, PTFE hose ends, and hose clamps for different options. Confirm the selected pump outlet, hose size, regulator ports, and included fittings before checkout.

Q: Where should the external electric fuel pump be installed?
A: Install the pump externally near the fuel tank on a rigid mounting surface. Keep it away from exhaust heat, suspension or drivetrain movement, sharp edges, road debris, and areas exposed to impact. Follow the marked fuel flow direction.

Q: Does this carburetor fuel pump kit require a fuel filter?
A: A compatible fuel filter is recommended to protect the pump, regulator, and carburetor from tank debris. Select a filter that provides suitable filtration without creating excessive restriction on the pump inlet.

Q: Is 20FT of fuel line enough for every installation?
A: Not necessarily. Required hose length depends on the fuel-tank position, pump and regulator locations, feed and return routing, vehicle wheelbase, and required service loops. Plan the complete route before cutting the hose.

Q: Does the regulator require a return line?
A: The listed regulator includes feed and return connections. Route each port according to the regulator instructions and confirm whether the selected carburetor fuel-system layout requires a return line to the tank.

Q: Is this a vehicle-specific bolt-on fuel system?
A: No. This is a universal-style custom installation kit for compatible carbureted systems. Confirm the electrical voltage, required fuel pressure, pump location, hose size, fittings, regulator layout, fuel type, and mounting space before ordering.

Q: What additional parts may still be required?
A: Depending on the installation, additional parts may include a fuel filter, fuel-pump relay, fuse, wiring, ground cable, return hose, tank pickup, shut-off valve, mounting hardware, additional adapters, and heat or abrasion protection.

Q: What should I check if the carburetor floods after installation?
A: Check the regulated fuel pressure first. Also inspect the regulator port routing, return-line restriction, carburetor needle and seat, float level, fuel contamination, and gauge reading. Do not continue operating the engine if fuel is leaking.

Q: What should I check if the engine experiences fuel starvation?
A: Check voltage at the pump while it is operating, the fuel level, inlet restriction, filter condition, hose routing, regulator setting, tank vent, fittings, and fuel demand under load. A nominal pump flow rating does not guarantee the same delivery in every installed system.

Q: What safety steps are required during installation?
A: Work in a ventilated no-smoking area, disconnect the battery, relieve fuel-system pressure, keep ignition sources away, and wear fuel-resistant gloves and eye protection. Prime the system and inspect every connection for leaks before starting the engine.