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Frequently Asked Questions
How do I know if my diesel fuel is contaminated?
Common signs include clogged fuel filters, hard starts, poor engine performance, dark or cloudy fuel, water contamination, or visible sludge buildup. Fuel testing can help determine the condition of the fuel before larger problems develop.
Can fuel polishing restore bad diesel fuel?
In many cases, yes. Fuel polishing can remove water, sludge, sediment, and microbial contamination to restore diesel fuel to a usable condition. Severely degraded fuel may require additional treatment depending on test results.
How often should diesel fuel be polished or maintained?
Most stored diesel fuel systems benefit from maintenance every 2 to 3 years, though systems exposed to moisture or long storage periods may need service sooner. Routine maintenance helps prevent sludge buildup and fuel degradation.
Do you provide mobile fuel polishing and generator service throughout Connecticut?
Yes. Emery’s Specialty Services provides fully mobile, on-site service for generators, marine vessels, RV systems, diesel storage tanks, and commercial fuel systems throughout Connecticut.
Do you need power on-site to perform fuel polishing?
No. Our equipment is fully self-contained and powered independently, allowing us to perform service even in locations without available power.
Can you service boats directly at the dock?
Yes. We can perform marine fuel polishing and maintenance directly at marinas and docks without requiring the vessel to be hauled out of the water or dry docked.
What types of fuel tanks do you clean?
We clean above-ground and underground diesel storage tanks for commercial, industrial, marine, residential, and generator applications. We do not clean gasoline tanks.
Do you clean underground diesel storage tanks?
Yes. Emery’s Specialty Services provides cleaning and maintenance for both underground and above-ground diesel storage tanks using chemical and pressurized cleaning methods.
Do you manually scrub the inside of diesel tanks?
No. We do not perform hand scrubbing inside tanks. Instead, we use a chemical and pressurized cleaning process designed to break down and remove contamination efficiently and safely.
What happens during diesel tank cleaning?
The tank is treated with specialized additives and pressurized cleaning methods to loosen sludge, water contamination, and buildup before contaminants are pumped out of the system. Fuel can also be tested to determine overall condition.
Can you test my fuel before recommending cleaning?
Yes. Fuel samples can be sent out for professional testing to identify water contamination, microbial growth, fuel degradation, and whether cleaning or treatment is recommended.
What are the signs of contaminated marine diesel fuel?
Common signs include hard starting, rough engine performance, clogged filters, excessive smoke, poor fuel quality, or water found in separators and filters.
Can you install or upgrade marine fuel polishing systems?
Yes. Emery’s Specialty Services can install onboard polishing units and upgrade marine fuel filtration systems for improved long-term fuel reliability.
What kinds of vessels do you service?
We work on yachts, fishing boats, commercial marine vessels, recreational boats, and marina-based fuel systems throughout Connecticut.
How often should marine fuel systems be maintained?
Marine fuel systems should be inspected and maintained regularly, especially on boats that sit unused for long periods or experience seasonal storage.
What types of generators do you service?
We service standby generators, portable generators, RV generators, building generators, and diesel-powered systems across most major brands including Generac, Kohler, Briggs & Stratton, Winco, Onan, Coleman, and more.
How often should a generator be serviced?
Most generators should be serviced at least once a year, though systems that run frequently or sit unused for long periods may require more frequent maintenance.
What is included in generator maintenance service?
Generator maintenance may include oil and filter changes, battery testing, system inspections, electrical diagnostics, radiator cleaning, fuel system checks, and full performance testing.
Do you offer emergency generator repair?
Yes. Emery’s Specialty Services provides generator troubleshooting and repair services for electrical faults, starting issues, power output problems, and other system failures.
Do you service RV generators?
Yes. We provide routine RV generator maintenance, diagnostics, repairs, fuel system cleaning, and inverter generator upgrades for RV owners throughout Connecticut.
Do I need to bring my RV to a shop for generator repairs?
In many cases, no. We provide mobile RV generator repair and maintenance directly at your location whenever possible.
What are common RV generator problems?
Common issues include hard starting, electrical faults, unstable power output, fuel contamination, carburetor buildup, vibration concerns, and generators shutting down unexpectedly.
Do you work on commercial and industrial fuel systems?
Yes. Emery’s Specialty Services works on commercial, industrial, marine, residential, and backup generator fuel systems up to 10,000 gallons.
What fuel-related maintenance services do you offer?
We provide fuel polishing, filtration upgrades, sludge removal, water contamination removal, fuel stabilization, fuel testing, tank cleaning, and fuel transfers.
What is fuel stabilization and why is it important?
Fuel stabilization helps reduce fuel degradation during storage while limiting corrosion and microbial growth inside the tank. Emery’s Specialty Services uses a stabilizer designed to last up to 12 months.
Are you insured?
Yes. Emery’s Specialty Services is fully insured and committed to safe, professional service practices across all generator and fuel system work.
Do I need to be present during service?
In many cases, no. As long as we have access to the equipment or system being serviced, work can often be completed without the customer being present.
How much does fuel polishing or generator service cost?
Pricing depends on the size of the system, the condition of the fuel or equipment, and the level of service needed. Quotes are provided based on your specific setup and service requirements.