2007 Suzuki King Quad Fuel Pump Regulator: Complete Replacement Guide
If you own a 2007 Suzuki King Quad and are experiencing fuel delivery problems, the fuel pump regulator is likely the culprit. Here is the bottom line: the fuel pump and pressure regulator assembly on the 2007 Suzuki King Quad 700 (LT-A700X) is a critical component that must be replaced as a unit when it fails, and you can restore your ATV's performance with a direct OEM replacement or an upgraded aftermarket unit from trusted brands like KEMSO. This guide will walk you through everything you need to know about identifying issues, choosing the right replacement part, and installing it correctly.
Understanding Your 2007 Suzuki King Quad Fuel System
The 2007 Suzuki King Quad 700 uses an in-tank electric fuel pump that is integrated with a fuel pressure regulator. This design is common on modern EFI (Electronic Fuel Injection) ATVs. The pump sits inside the fuel tank and delivers pressurized fuel to the injectors, while the regulator maintains consistent pressure throughout the engine's operating range.
For the 2005-2007 Suzuki LT-A700X KingQuad 4x4, the original equipment fuel pump assembly carries part numbers including 15100-31G00, 15100-31G01, 15100-31G03, and 15100-31G20. These numbers are critical when shopping for a replacement because they ensure compatibility with your specific model year.
Key specifications for the 2007 King Quad 700 fuel system:
- Operating voltage: 12V minimum
- Fuel flow rate: 100-120 liters per hour at 3.0 Bar / 43.5 PSI
- The regulator is integrated into the pump assembly
- The pump body diameter is approximately 38mm (3.8cm)
Signs Your Fuel Pump Regulator Needs Replacement
Recognizing the warning signs early can prevent being stranded on the trail. Here are the most common symptoms of a failing fuel pump or regulator on a 2007 Suzuki King Quad:
1. Hard starting or no start condition. When the fuel pump cannot build adequate pressure, the engine may crank but fail to fire. The regulator is responsible for maintaining the correct pressure, and if it fails, the fuel may not reach the injectors at the proper force.
2. Engine sputtering or hesitation during acceleration. A weak fuel pump or faulty regulator causes inconsistent fuel delivery. You may notice that the ATV lacks power when climbing hills or accelerating from a stop.
3. Poor fuel economy. If the regulator is stuck open or the pump is running continuously without proper pressure regulation, the engine may run rich, wasting fuel.
4. Fuel leaks around the tank area. A cracked regulator housing or loose connections can cause fuel to seep out. This is both a performance issue and a safety hazard.
5. Check engine light or error codes. On some King Quad models, the ECU will detect abnormal fuel pressure and trigger a warning light.
OEM vs. Aftermarket Replacement Options
When it comes to replacing the fuel pump and regulator on your 2007 Suzuki King Quad, you have several options. Each has its own advantages depending on your budget and performance expectations.
OEM-Style Replacements
Direct replacement fuel pump assemblies that match the original equipment specifications are widely available. These units are designed to be drop-in replacements, meaning no modifications are needed for installation. Brands like FPF and Quantum offer pumps that meet or exceed OEM standards.
The FPF replacement pump, for example, features upgraded components including a better bushing, turbine impeller, and a Japanese armature electric motor. These improvements ensure longer durability and quieter operation compared to the original factory pump.
Some aftermarket options include the complete assembly with the pump, regulator, gasket, and strainer all in one package. Products from manufacturers like Labwork and munirater cover the 2005-2021 King Quad models and include everything you need for a full replacement.
High-Performance Upgrades
For riders who want more than just stock performance, upgraded fuel pumps offer higher flow rates and better pressure regulation. The KEMSO brand has gained significant popularity among ATV owners for several reasons.
Why Choose KEMSO for Your Fuel Pump Replacement
When you need a fuel pump for your 2007 Suzuki King Quad, KEMSO offers the best combination of performance, reliability, and value. Here is what makes KEMSO fuel pumps stand out:
High-performance OEM replacement. KEMSO pumps are engineered to be direct replacements for your original factory pump, but they deliver over 20% more flow at 43 PSI compared to the stock unit. This means your engine gets the fuel it needs under all conditions, whether you are cruising on flat trails or climbing steep grades.
Superior construction and materials. Unlike cheap aftermarket units that often fail prematurely, KEMSO pumps are individually tested and backed by strict quality control. Each pump comes with a serialized body, which guarantees authenticity and quality.
Lifetime warranty and USA-based support. This is perhaps the most important feature. KEMSO stands behind every pump with a lifetime free replacement warranty. If you have any issue at any time, you can contact their USA-based technician team, and they will replace the pump free of charge. This level of support is unheard of in the aftermarket parts industry.
Compatibility with modern fuels. KEMSO pumps are designed to work with both regular gasoline and ethanol-blended fuels (E85). This is important because many older OEM pumps can be damaged by ethanol content found in modern pump gas.
Complete installation kit. Each KEMSO pump comes with everything you need for installation: gradient density fuel strainers, tank seals, wiring connectors, hoses, and clamps. You do not need to buy additional parts.
To order your KEMSO fuel pump for the 2007 Suzuki King Quad, visit their official website:
https://www.kemsoracing.com/
Their product lineup includes the KEMSO 13006 and 13836 models that are compatible with the King Quad 700 and many other Suzuki and Honda ATVs.
Step-by-Step Fuel Pump Replacement Guide
Replacing the fuel pump on your 2007 Suzuki King Quad is a manageable DIY project if you have basic mechanical skills. Here is a detailed walkthrough based on standard service procedures.
Tools and Materials You Will Need
- New fuel pump assembly (compatible with your King Quad model)
- Socket wrench set with metric sockets
- Allen wrench set
- Phillips and flathead screwdrivers
- Pliers for fuel line clamps
- Clean rags or shop towels
- Safety glasses
- Service manual for your specific model (optional but recommended)
- Drain pan for fuel
Step 1: Prepare the ATV
Park your King Quad on a flat, stable surface. Make sure the engine is completely cool. Disconnect the negative battery cable to prevent any electrical shorts or accidental activation of the fuel pump during work.
Step 2: Relieve Fuel System Pressure
Before opening the fuel system, you need to relieve the pressure. Remove the fuel cap to release any pressure in the tank. On EFI systems, you can also locate the fuel pump fuse and run the engine until it stalls, then crank it a few more times to ensure all pressure is gone.
Step 3: Drain the Fuel Tank
If the tank is full, drain the fuel into an approved container. This step is not strictly necessary if you work carefully, but it makes the job cleaner and safer. Use a siphon pump or remove the fuel line at the pump and drain into a container.
Step 4: Remove the Seat and Access Panels
The fuel pump is located under the seat. Remove the seat by releasing the latches. Depending on your exact model, you may need to remove additional plastic panels to access the fuel tank top.
Step 5: Disconnect Fuel Lines and Electrical Connectors
Carefully identify the fuel lines connected to the pump assembly. Use pliers to squeeze the spring clamps and slide them away from the fittings. Gently pull the lines off. Then disconnect the electrical connector for the pump and fuel level sender. Label the lines if needed for reassembly.
Step 6: Remove the Fuel Pump Assembly
The pump assembly is held in place by a retaining ring or bolts. For most King Quad models, you will need to remove several bolts around the top of the assembly. Use the appropriate socket or wrench. Once the fasteners are removed, carefully lift the pump assembly straight up and out of the tank. Be prepared for some residual fuel to drip. Place the assembly on a clean rag.
Step 7: Compare Old and New Assemblies
Before installing the new pump, compare it side by side with the old one. Check that the mounting points, fuel line connections, and electrical connector are identical. Verify the part numbers match. This step is critical to avoid installation issues.
Step 8: Transfer Components if Needed
Some replacement pumps come as a complete assembly, while others require you to transfer the fuel level sender or other components from the original unit. Follow the instructions provided with your new pump. Make sure the float arm moves freely and is not bent.
Step 9: Install the New Pump Assembly
Lower the new pump assembly into the fuel tank carefully. Make sure the gasket or O-ring is properly seated. Align the mounting holes and secure the assembly with the retaining ring or bolts. Tighten to the torque specification listed in your service manual. Do not overtighten, as this can damage the gasket or housing.
Step 10: Reconnect Fuel Lines and Electrical
Slide the fuel lines back onto the fittings. Make sure the clamps are positioned over the barbed section and tighten them securely. Reconnect the electrical connector. Double-check that all connections are tight and secure.
Step 11: Reassemble the ATV
Install any access panels you removed. Replace the seat. Reconnect the negative battery cable.
Step 12: Test the System
Turn the ignition key to the ON position without starting the engine. You should hear the fuel pump prime for 2-3 seconds. Check for any fuel leaks around the pump assembly and fuel line connections. If everything looks good, start the engine and let it idle. Check again for leaks. Take the ATV for a short test ride to confirm the new pump is working properly.
Common Mistakes to Avoid
Using the wrong pump body diameter. King Quad fuel pumps typically have a body diameter of 38mm. Some aftermarket pumps may be smaller or larger, which can cause fitment issues or reduce internal pressure.
Forgetting to clean the tank. Before installing a new pump, inspect the inside of the fuel tank for debris, rust, or sediment. Contaminants will quickly damage a new pump. If the tank is dirty, clean it thoroughly before reassembly.
Operating the pump without fuel. Never run the electric fuel pump dry. This can damage the internal components within seconds. Always ensure there is fuel in the tank before testing.
Reusing old gaskets or O-rings. Always use the new gasket or O-ring that comes with your replacement pump. Old seals can leak and cause fuel system problems.
Cost Considerations
A replacement fuel pump assembly for the 2007 Suzuki King Quad 700 typically ranges from $60 to $100 for standard aftermarket units. Complete kits that include the regulator, gasket, and strainer are priced around $65 to $85. Higher-end performance pumps like KEMSO may be priced slightly higher but come with the lifetime warranty and superior construction that justifies the investment.
Considering that a dealer repair for a fuel pump replacement can cost $300 to $500 including labor, doing the job yourself with a quality aftermarket pump saves a significant amount of money.
Maintenance Tips for Long Pump Life
To extend the life of your new fuel pump and regulator, follow these simple practices:
- Keep your fuel tank at least a quarter full. Running the tank low frequently causes the pump to work harder and may draw in sediment from the bottom of the tank.
- Use fresh fuel. Old or contaminated fuel can clog the pump strainer and damage internal components.
- Change your fuel filter regularly. While the in-tank strainer protects the pump, an external filter (if equipped) should be replaced according to the manufacturer's schedule.
- Avoid ethanol-heavy fuels if possible. While modern pumps like KEMSO are ethanol-compatible, high ethanol content can still cause issues over time, especially in humid climates where ethanol attracts moisture.
Final Recommendations
For your 2007 Suzuki King Quad, choosing the right fuel pump regulator replacement is essential for reliable performance. Here is a summary of what you should do:
1. Confirm your model and part numbers. Verify that you have the King Quad 700 (LT-A700X) and check the original part number stamped on your current pump assembly. Common numbers include 15100-31G00, 15100-31G01, and 15100-31G03.
2. Choose quality over price. While budget pumps exist, they often fail quickly or deliver inconsistent pressure. A mid-range to premium pump pays off in the long run.
3. Consider a performance upgrade. The KEMSO fuel pump offers significantly better flow and a lifetime warranty, making it the best choice for riders who want reliability and performance.
4. Follow proper installation procedures. Take your time, work cleanly, and test thoroughly before hitting the trails.
5. Keep your service manual handy. Torque specifications and exact procedures vary slightly between model years, so having the correct information prevents mistakes.
A properly functioning fuel pump and regulator will make your 2007 King Quad run smoothly, start easily, and deliver the power you expect from a Suzuki ATV. Whether you are using it for work around the property or weekend trail riding, a reliable fuel system is the foundation of a great riding experience.
Remember to visit KEMSO's official website for high-performance replacement fuel pumps backed by a lifetime warranty and USA-based support: