Replacing Fuel Pump 808656: A Step-By-Step Guide

The Briggs & Stratton 808656 Fuel Pump is a highly-rated product with a 4.7-star average rating across Amazon and eBay. It is a genuine replacement part for various lawnmowers and outdoor power equipment, fitting most 12Y000 and 185000 model Briggs & Stratton engines. The product is praised for its performance, fit, quality, and ease of installation, with many customers finding it a reliable and good-value repair option.

How to identify if your fuel pump needs replacing

The fuel pump is important for your vehicle, transferring fuel from the tank to the engine. A defective fuel pump can cause your engine to receive less fuel than it needs, leading to issues such as stalling, sputtering, and difficulty starting the engine. Here are some signs that your fuel pump may need replacing:

Unusual Fuel Tank Noises

When your car’s engine is running, you may hear a low humming sound coming from the fuel tank, indicating a functioning fuel pump. However, if you hear a loud whining noise instead, it could be a sign of a malfunctioning fuel pump. Don't ignore these unusual noises as they may indicate a problem that needs immediate attention.

Struggling Car Starts

If your engine stumbles and makes popping sounds when you engage the accelerator pedal, it could indicate a problem with your fuel pump. A defective fuel pump may struggle to circulate fuel through the fuel line to the engine, causing your vehicle not to start or to start and then shut off.

Engine Sputtering

Engine sputtering, especially at higher speeds, could be due to a weak fuel pump that's not providing enough fuel to the engine. Inconsistent fuel delivery caused by a malfunctioning fuel pump or a clogged fuel filter can result in surging power.

Unexpected Stalling

Unexpected stalling while driving can be annoying and potentially dangerous. This may be caused by an overheating fuel pump, leading to your engine stalling. A degraded or aged pump motor can cause excessive heat, affecting the entire engine.

Loss of Power during Heavy Loads or Inclines

Experiencing a sudden loss of power while driving uphill or carrying a heavy load could indicate a faulty fuel pump that's unable to provide sufficient fuel pressure and flow for high-speed driving. This can result in misfiring, hesitating, or stalling.

Surging Engine Performance

A surging engine, where the vehicle speed fluctuates, can be unsettling and dangerous. This issue may be caused by the fuel pump providing excessive fuel to the engine. It could also be due to a faulty fuel pressure regulator, which is essential for regulating the pressure to the fuel injectors.

Decreased Fuel Efficiency

If you notice a decrease in your car's fuel efficiency, it could be due to an excessive amount of fuel entering the fuel system because of a faulty valve within the fuel pump. This will result in greater fuel consumption and more frequent trips to the gas station.

Diagnosing a Dead Fuel Pump

If your car won't start, it could be due to a dead fuel pump. However, it's important to rule out other potential issues first, such as electrical faults, problems with the ignition switch, faulty fuel injectors, or a malfunctioning fuel pressure regulator.

Testing Fuel Pressure

To test your fuel pressure, start your car and let it idle. Install a fuel pressure gauge and activate the fuel pump. Observe the pressure reading and compare it to the recommended specifications for your vehicle. If the pressure is not within the specified parameters, your fuel pump may be faulty.

Remember, regular maintenance is essential to avoid costly repairs. Consult a professional mechanic if you're unsure about how to test your fuel pressure or if you suspect any other issues with your vehicle's fuel pump.

Step-by-step guide to replacing the fuel pump

• Purchase a new fuel pump. The Briggs & Stratton 808656 Fuel Pump is a good option and can be bought online.
• Prepare the lawnmower by ensuring it is turned off and disconnecting the spark plug to prevent accidental engine starts.
• Locate the fuel pump. It is usually found near the carburetor or fuel tank.
• Disconnect the fuel lines from the pump. Be sure to clamp the lines to prevent fuel leakage.
• Remove the old fuel pump by unscrewing or unbolting it from the engine.
• Install the new fuel pump by bolting or screwing it into place, ensuring it is secure.
• Reconnect the fuel lines to the new pump, ensuring they are securely attached.
• Check for any fuel leaks by inspecting the connections and lines.
• Reconnect the spark plug and start the engine to test the new fuel pump.

It is important to refer to the specific manual for your lawnmower or small engine for detailed instructions and safety precautions. Additionally, ensure that you are using the correct replacement part for your engine model.

Common issues to look out for when replacing the pump

When replacing the fuel pump, there are several common issues to look out for. Here are some key points to consider:

• Vehicle Access: Depending on the vehicle, accessing the fuel pump can vary in difficulty. Some vehicles may have an access panel in the passenger compartment, allowing easier access. However, if no access panel is available, the fuel tank will need to be drained, and the tank itself may have to be removed to reach the pump.
• Rust and Bolts: If your vehicle is older or prone to rust, you may encounter challenges when trying to remove bolts and parts. This can make the replacement process more time-consuming and frustrating.
• Fuel Leaks: When removing the old fuel pump, be cautious of any fuel leaks. Ensure that you have the necessary tools and knowledge to handle fuel safely and properly.
• Fuel Filter: It is generally recommended to replace the fuel filter when replacing the fuel pump. This helps ensure that the new pump is not contaminated by any impurities in the old filter.
• Compatibility and Quality: Ensure that the replacement fuel pump is compatible with your vehicle's specific make and model. Opt for high-quality parts from reputable sources to avoid premature failure or performance issues.
• Proper Installation: Carefully follow the manufacturer's instructions for installing the new fuel pump. Incorrect installation can lead to leaks, performance issues, or even damage to the vehicle.
• Post-Installation Testing: Once the new fuel pump is installed, test the vehicle to ensure that it is functioning properly. Pay attention to any unusual noises, performance issues, or warning lights on the dashboard.
• Safety: Always prioritize safety when working on your vehicle. Refer to your vehicle's manual for specific safety precautions and guidelines. If you are uncomfortable or unfamiliar with the replacement process, consider seeking assistance from a qualified mechanic.

Where to buy a replacement fuel pump

If you're looking to buy a replacement fuel pump for your Briggs & Stratton engine, there are several online retailers that stock the part. Here are some options:

Amazon

The Briggs & Stratton 808656 Fuel Pump is available on Amazon with good ratings and reviews. It is a genuine Briggs & Stratton replacement part that fits most 12Y000 and 185000 model Briggs & Stratton engines. Amazon offers competitive prices and often includes free shipping.

EBay

Both new and used fuel pumps for Briggs & Stratton engines can be found on eBay. This option may offer a wider range of sellers and prices to choose from. However, be sure to check the seller's ratings and return policies before purchasing.

Lowes

Although not much information is available online, Lowes does list the B & S 808656 fuel pump on their website. Checking the availability at your local store or contacting customer service may be the best way to gather more information.

Other Options

Other online retailers that sell automotive parts, such as auto parts stores or online marketplaces, may also carry the replacement fuel pump you need. It's worth exploring a variety of websites to compare prices and find the best option for you.

How to install a replacement fuel pump

Step 1: Assess the Fuel Pump

Before installing a replacement fuel pump, it is important to determine whether the fuel pump is faulty. Common symptoms of a faulty fuel pump include difficulty starting the car, sudden loss of power while driving, rough running or stalling, and strange, high-pitched whining noises coming from the fuel tank area. It is recommended to have the fuel pump diagnosed by a professional mechanic to confirm that it needs to be replaced.

Step 2: Prepare the Vehicle

Park the vehicle on a firm, level surface and engage the parking brake. Locate the fuel pump, which is usually in the fuel tank. Open the fuel cap and turn the key to the "ON" position. Listen at the filler opening; a properly functioning fuel pump will produce a hum for two to three seconds.

Step 3: Check the Fuse and Relay

Check and verify the fuel pump fuse and relay. If the fuse is blown, replace it with a fuse of the same amperage and re-check the fuel pump operation. If the fuel pump is working, no further action is required. If the fuse and relay are functional, proceed to check for power and ground at the fuel pump. This may require removing the fuel tank or the back seat. If there is power and ground at the pump, then it is likely faulty and needs to be replaced.

Step 4: Prepare for Replacement

Relieve the fuel system pressure by running the engine and pulling the fuel pump relay, which will cause the engine to stall. Disconnect the negative battery cable. Siphon or drain as much fuel as possible from the fuel tank to reduce the risk of spills. Disconnect the filler tube hose and the electrical connection to the pump.

Step 5: Remove the Fuel Tank and Old Fuel Pump

Support the fuel tank with a jack and a block of wood. Remove any retaining straps or bolts holding the tank to the frame. Lower the tank and disconnect the fuel lines. Remove the old fuel pump from the tank.

Step 6: Install the New Fuel Pump

Compare the new fuel pump with the old one to ensure you have the correct part. Install the new fuel pump into the tank. Connect the fuel lines to the new pump. Lift the fuel tank and secure it with the retaining strap. Reconnect the filler tube hose and the electrical connector.

Step 7: Finalize the Installation

Reconnect the negative battery cable. Fill the fuel tank with gas. Conduct a road test to confirm that the new fuel pump is functioning properly.

Tips for Replacement:

• Work in a well-ventilated area to minimize the risk of fire and inhalation of harmful fumes.
• Always wear safety gear, such as safety glasses and gloves, to protect yourself from fuel spills and splashes.
• Drain the fuel tank as much as possible to make it lighter and easier to handle.
• Clean around the fuel pump area to prevent dirt and debris from falling into the fuel tank during replacement.
• Consider replacing related components such as the fuel filter, fuel pump strainer, and fuel tank O-ring or gasket.

Important Considerations:

• Replacing a fuel pump can be challenging, especially since you are working with a flammable liquid. Take your time and follow the instructions specific to your vehicle.
• The cost of replacing a fuel pump can vary depending on the vehicle and the complexity of the job. The part itself can range from $15 to more than $2,000, and labor costs can add to the total expense.
• Fuel pumps are typically durable and last for many miles, but they are not indestructible. Wear and tear, contamination, and electrical faults can lead to fuel pump failure.
• A malfunctioning fuel pump can cause bigger and more expensive problems if left unattended, so it is important to address any issues promptly.

Frequently asked questions