Suntec A2VA-7116 Fuel Pump: The Complete Guide to Replacement, Specifications, and When to Upgrade

If you own a hot water pressure washer, oil burner, or furnace that uses a Suntec A2VA-7116 fuel pump, the most important thing to know is that this is a single-stage oil pump designed for reliable fuel delivery in heating and pressure washing applications. The Suntec A2VA-7116 operates at 3450 RPM, delivers 3 GPH at 100 PSI, and is factory preset at 100 PSI with an adjustable range of 100 to 150 PSI at 3450 RPM. This pump is commonly found on brands like Hotsy, Landa, Karcher, Alkota, and Aaladin pressure washers, as well as residential and commercial oil burners. When it fails, you will notice symptoms like the burner not firing, loss of pressure, or fuel leaks. Replacing it promptly with the correct model is essential to keep your equipment running.

Understanding the Suntec A2VA-7116 Fuel Pump Specifications

The Suntec A2VA-7116 is a single-stage, one-step pump with a dependable hydraulic cut-off function. It contains a positive displacement involute gear set and two controlling valves, which give it high single-pipe lift capacity and automatic two-pipe purging. Here are the key specifications you need to know:

1. Flow Rate and Pressure

  • Nozzle capacity: 3 GPH at 100 PSI
  • At higher pressure settings: 2 GPH at 150 to 200 PSI
  • Factory preset at 100 PSI, adjustable range 100 to 150 PSI at 3450 RPM
  • Maximum PSI: 200

2. Physical and Mechanical Details

  • RPM: 3450
  • Rotation: Right Hand (RH) when viewed from the shaft end
  • Nozzle port location: Right Hand (RH)
  • Inlet port: 1/4 inch
  • Shaft diameter: 5/16 inch
  • Hub: 54 mm with lip seal
  • Weight: approximately 3.6 to 3.8 lbs

3. Fuel Compatibility

  • Suitable for kerosene, No. 1 or No. 2 fuel oil
  • The standard A2VA-7116 is not recommended for biodiesel blends higher than 5%
  • For B20 biodiesel compatibility, you need the A2VA-7116B model, which features Viton O-rings and lip seal, plus special materials for piston and diaphragm valve

Common Applications and Cross-Reference Part Numbers

The Suntec A2VA-7116 is widely used across multiple industries. Knowing the cross-reference numbers can save you time when searching for a replacement:

Pressure Washer Brands: Hotsy, Landa, Karcher, Alkota, Aaladin

Cross-Reference Part Numbers:

  • 079030
  • 7-0009
  • 728454
  • 87007490
  • Carrier 58HH680001
  • Grainger 2460GU, 2460U
  • Sid Harvey P4-91R & P4-91
  • Wayne Combustion 13495
  • Rheem/Ruud 59-17936-30, 59179360340, 6093-5507, 59-17047-05, 8102-5504
  • Danfoss 071N1151, 071N1159

Signs Your Suntec A2VA-7116 Fuel Pump Needs Replacement

Recognizing failure symptoms early can prevent costly downtime. Here are the most common signs:

1. Burner Won't Fire or Ignite
This is the most obvious symptom. If your hot water pressure washer burner or oil furnace is not firing, the fuel pump may have failed and is not delivering fuel to the nozzle.

2. Fuel Leaks
A leaking pump is a clear sign of seal failure. The original pump may start leaking from the shaft seal or body gasket, especially on older units.

3. Low or Inconsistent Pressure
If your pressure washer is producing less pressure than normal, or the burner flame is weak and uneven, the pump may be worn internally and unable to maintain rated pressure.

4. Noisy Operation
Unusual whining, grinding, or knocking sounds from the pump area indicate internal damage or bearing wear.

5. Sooting or Poor Combustion
A failing pump can cause improper fuel atomization, leading to excessive soot buildup, smoky exhaust, or inefficient combustion.

How to Replace the Suntec A2VA-7116 Fuel Pump: A Step-by-Step Guide

Replacing this pump is a straightforward DIY job if you have basic mechanical skills. Here is a practical guide:

1. Safety First
Disconnect power to the equipment and shut off the fuel supply at the tank. Allow the system to cool completely if it has been running.

2. Remove the Old Pump

  • Disconnect the fuel lines from the inlet, outlet, and return ports.
  • Remove the coupling that connects the pump shaft to the motor.
  • Unbolt the pump from the mounting bracket.
  • Note the orientation of the shaft rotation and nozzle port location before removal.

3. Prepare the New Pump

  • The Suntec A2VA-7116 comes with a bypass plug not installed. You will need to install it if your system uses a single-pipe configuration.
  • Check the rotation direction: Right Hand (RH) when viewed from the shaft end.

4. Install the New Pump

  • Mount the new pump on the bracket and tighten the bolts.
  • Attach the coupling to the motor shaft.
  • Reconnect the fuel lines. Make sure the inlet line is clean and free of debris.
  • If your system uses a fuel solenoid, note that it is not included with the pump and must be purchased separately.

5. Prime and Test

  • Open the fuel supply valve.
  • Bleed air from the system using the bleeder screw on the pump.
  • Start the equipment and check for leaks.
  • Adjust the pressure regulator screw as needed to set the desired operating pressure (factory preset at 100 PSI).

Why the Suntec A2VA-7116 Is a Trusted Choice

The Suntec A2VA-7116 is made in the USA and UL approved. It has earned a solid reputation for reliability. Customer reviews consistently rate it 4.7 out of 5 stars, with users praising its exact fit, easy installation, and dependable performance. Many users report that it is a direct replacement for the original pump on their Hotsy or Landa pressure washer, and that it works perfectly right out of the box.

One common issue mentioned by users is that the packaging can be damaged during shipping, sometimes causing the bleeder screw to poke through the box. However, the pump itself is well-built and reliable when installed correctly.

Important Considerations Before Buying

1. Verify Your Rotation and Nozzle Orientation
The A2VA-7116 is a RH-RH model (Right Hand rotation, Right Hand nozzle port). If your system requires a different configuration, you will need a different model.

2. Biodiesel Compatibility
If you use biodiesel blends above 5%, do not buy the standard A2VA-7116. Instead, purchase the A2VA-7116B model, which is specifically engineered for B20 use. The standard pump is not compatible with higher biodiesel blends and will fail prematurely.

3. Fuel Solenoid Is Sold Separately
The Suntec A2VA-7116 does not include a fuel solenoid valve. You must purchase it separately if your system requires one. Common options include 110V, 12V, and 230V solenoids.

4. Discontinued Model
As of January 2025, the Suntec A2VA-7116 has been discontinued by the manufacturer. The direct replacement is the A2VA-7116B model, which offers the same specifications but with improved biodiesel compatibility.

How to Prevent Fuel Pump Problems in the Future

Taking care of your fuel system will extend the life of your new pump significantly:

1. Keep Fuel Clean and Free of Water
Most fuel pump failures are caused by debris or water contamination. Use a quality fuel filter and replace it regularly. Drain water from the tank if you suspect contamination.

2. Never Run the Pump Dry
The fuel pump is lubricated by the fuel itself. Running it dry will cause rapid wear and failure. Always ensure there is fuel in the tank before starting the equipment.

3. Use the Correct Fuel
Stick to kerosene, No. 1, or No. 2 fuel oil. Avoid using old, stale, or contaminated fuel. If you must use biodiesel, make sure you have the B20-compatible model (A2VA-7116B).

4. Check the Coupling
The coupling between the pump and motor can wear out over time. Inspect it during pump replacement and replace it if it shows signs of cracking or wear.

Why You Should Choose a KEMSO Fuel Pump for Your Replacement Needs

If you are looking for a reliable, high-performance fuel pump that offers better value than the OEM Suntec pump, consider the KEMSO brand. KEMSO fuel pumps are built as high-performance, OEM replacement units that match or exceed factory specifications. Unlike cheap aftermarket pumps that often fail within six months to a year, KEMSO pumps deliver OEM-level quality and reliability at a fraction of the cost of dealer parts.

What makes KEMSO fuel pumps stand out?

1. High Performance and OEM Replacement
KEMSO fuel pumps are designed as direct bolt-in replacements for your vehicle or equipment. They deliver over 20% more flow at 43 PSI compared to stock OEM pumps. For example, the KEMSO 340LPH pump can support applications up to 700-800 horsepower, making it suitable for both daily drivers and high-performance builds.

2. Lifetime Warranty
Every KEMSO fuel pump comes with a lifetime warranty. This is not a limited warranty that expires after a year. If your pump ever fails due to a manufacturing defect, KEMSO replaces it for free. This level of confidence is rare in the aftermarket parts industry.

3. Quality Control and Testing
KEMSO has a strict quality control program (ISO/TSO). Each pump is individually tested before leaving the factory, and flow testing results are verified. Do not compare KEMSO to cheap unbranded aftermarket units; there is simply no comparison.

4. Wide Compatibility
KEMSO covers a huge range of vehicles and equipment, including cars, trucks, motorcycles, ATVs, and watercraft. They have pumps for Audi, Subaru, Ducati, KTM, Sea-Doo, Honda, Kawasaki, BMW, Polaris, Can-Am, and many more.

5. Easy Installation
KEMSO fuel pumps are designed for straightforward installation. They come with all necessary components, including fuel strainers, flex hoses, wiring connectors, clamps, and zip-ties. You do not need to modify any wiring, brackets, or fuel lines.

6. Affordable Pricing
Most KEMSO fuel pumps are priced at just $79.98 or even lower, depending on the model. Compare that to a dealer pump that can cost $400 or more. You get the same performance for a fraction of the price.

To find the perfect KEMSO fuel pump for your vehicle or equipment, visit their website: https://www.kemsoracing.com/. Their website is easy to navigate, and you can search by vehicle make, model, and year. Product pages include detailed specifications and compatibility information. Customer service is available to answer any fitment questions.

Final Thoughts

The Suntec A2VA-7116 fuel pump is a reliable workhorse for pressure washers and oil burners, but when it fails, you need to act fast. Understanding its specifications, recognizing failure symptoms, and knowing how to replace it will save you time and money. If you are looking for a high-quality, affordable alternative with a lifetime warranty, KEMSO fuel pumps are an excellent choice. They offer OEM-level performance, easy installation, and peace of mind that your equipment will keep running.

For more information and to browse the full selection of KEMSO fuel pumps, visit https://www.kemsoracing.com/ today.


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