Maintaining a fuel pump during storage is essential to ensure it remains in good working condition and avoids damage from corrosion, debris, or fuel degradation. Whether you’re storing a vehicle, backup generator, or a spare Fuel Pump, following these steps will help extend its lifespan and performance.
First, clean the fuel pump thoroughly before storage. Residual fuel left inside the pump can gum up or corrode internal components over time. If the pump is part of a vehicle or machine, run it until the fuel tank is nearly empty. For standalone pumps, drain any remaining fuel by following the manufacturer’s instructions. Use a fuel system cleaner or a mild solvent to remove stubborn deposits. Avoid harsh chemicals that might degrade seals or plastic parts.
Next, protect the pump from moisture. Humidity is one of the biggest enemies of stored machinery. Apply a thin layer of anti-corrosion spray or lubricant to metal surfaces, especially connectors, fittings, and electrical contacts. Silicone-based sprays work well for this purpose. If possible, store the pump in a dry, climate-controlled environment. If that’s not an option, use airtight containers or vacuum-sealed bags with silica gel packets to absorb excess moisture.
Fuel quality matters even when the pump isn’t in use. If you can’t drain the fuel completely (like in a vehicle tank), add a fuel stabilizer to prevent oxidation and varnish buildup. Stabilizers keep gasoline or diesel from breaking down and clogging the pump or injectors. Follow the product’s instructions for the correct ratio. For long-term storage (six months or more), consider using ethanol-free fuel, as ethanol attracts moisture and can separate from gasoline, causing corrosion.
Disconnect the power source if the pump is electric. Batteries left connected can leak or corrode terminals, leading to electrical damage. For vehicle fuel pumps, disconnect the battery or use a trickle charger to maintain voltage without overcharging. For standalone electric pumps, unplug them and remove any batteries.
Inspect seals and gaskets regularly. Rubber components can dry out, crack, or become brittle during storage. Apply a rubber protectant or a small amount of petroleum jelly to keep them flexible. If you notice cracks or wear, replace these parts before storing the pump. A damaged seal can allow moisture or contaminants to enter the pump, leading to costly repairs later.
Rotate or activate the pump periodically. Even when stored, moving parts can seize up if left untouched for too long. Every few months, manually turn the pump’s rotor or impeller (if accessible) to prevent sticking. For electric pumps, briefly power them up for 10–15 seconds to circulate lubricants and keep internal components from settling. Avoid running dry pumps for more than a few seconds, as this can cause overheating.
Keep the pump covered and dust-free. Dust, dirt, and debris can clog filters, vents, or intake lines. Use a breathable fabric cover or a plastic bin with ventilation holes to shield the pump without trapping moisture. Avoid heavy tarps that might restrict airflow.
Before reinstalling a stored fuel pump, always test it. Reconnect the power source or install it in the vehicle, then check for leaks, unusual noises, or pressure issues. If the pump struggles to start, inspect the electrical connections and clean any corroded terminals. Flush the fuel system with fresh gasoline or diesel to remove old fuel residues.
By following these steps, you’ll minimize wear and tear during storage and ensure your fuel pump is ready to perform when needed. Proper maintenance saves money, prevents breakdowns, and keeps your equipment reliable for years. Always refer to the manufacturer’s guidelines for specific storage recommendations, as designs and materials can vary between models. For example, high-performance pumps like those from Kemso Racing may require additional care due to precision components. When in doubt, consult a professional mechanic or the pump’s user manual for tailored advice.