7+ Major CfMoto UForce 800 problems and Solutions

The most common CFMoto UForce 800 problems are transmission, electrical, and engine issues. So discuss these issues one-by-one with their easy solutions.

Major CFMoto UForce 800 problems and Solutions

Now explore these problems one by one and these are the same as Cfmoto Uforce 1000 problems.

1. Transmission Problems

You might find yourself facing transmission problems with your CFMoto UForce 800, causing frustration and hindering your off-road adventures. Among these issues, transmission problems stand out as a significant concern.

Gear shifting is one of the most common problems reported by owners. This issue manifests as resistance or slipping when trying to change gears, making it challenging to maintain control of the vehicle.

Here are some potential reasons behind transmission problems in your CFMoto UForce 800:

Common Transmission Problems

  • Hard Shifting: This issue involves difficulty in changing gears, which may be due to low transmission fluid levels, dirty fluid, or internal transmission wear and tear.
  • Transmission Slipping: When the transmission slips, it fails to engage or changes gears unexpectedly. This can be caused by worn transmission bands, degraded transmission fluid, or solenoid problems.
  • Noise in Transmission: Hearing unusual noises like whining, clunking, or humming when the vehicle is in motion could indicate low fluid levels, gear wear, or bearing damage.
  • Transmission Overheating: Overheating can occur from towing heavy loads, insufficient fluid levels, or using incorrect fluid types, leading to significant transmission damage if not addressed.
  • Failure to Engage Gear: Sometimes, the vehicle might not move when a gear is selected. This could be due to a range of issues, including hydraulic leaks, electronic malfunctions, or a damaged transmission pump.


  • Regular Maintenance: Regular checks and changes of the transmission fluid can prevent many issues. Use the manufacturer-recommended fluid type and follow the suggested service intervals.
  • Fluid Level and Quality Check: Ensure that the transmission fluid is at the correct level and is not dirty or burnt. Change the fluid if it’s contaminated to prevent damage to internal components.
  • Transmission Cooler: Installing an aftermarket transmission cooler can help reduce the risk of overheating, especially if you frequently haul heavy loads or drive in challenging conditions.
  • Diagnostic Check: Use a diagnostic tool to scan for any error codes that could indicate specific problems within the transmission system. This can help identify solenoid issues or other electronic problems that might be affecting the transmission’s performance.
  • Professional Inspection: If you’re experiencing persistent transmission issues, a professional inspection is warranted. A qualified mechanic can inspect the transmission for wear and damage and recommend repairs or adjustments. In some cases, parts like the torque converter, transmission bands, or bearings may need replacement.
  • Upgrade Components: For those who use their UForce 800 in extreme conditions, considering upgrading to heavy-duty transmission components may enhance durability and performance.

2. Engine Problems

CFMoto UForce 800 engines, while generally reliable, can experience some issues. Here are some problems with the engine.

1. Overheating

Overheating can significantly damage the engine, leading to head gasket failures, warped heads, or even complete engine failure if not addressed promptly. The cooling system’s primary role is to remove excess heat from the engine. Low coolant levels can reduce the system’s efficiency, while a malfunctioning radiator fan can fail to draw enough air through the radiator to cool the coolant. Clogged passages in the cooling system can restrict coolant flow, reducing its cooling capacity.

Detailed Solutions:

  • Regularly check coolant levels and inspect the system for leaks. Use a coolant recommended by the manufacturer to ensure optimal cooling efficiency.
  • Clean the radiator with low-pressure water or air to remove debris. Make sure the radiator fins are not damaged.
  • Test the radiator fan for correct operation. Check the electrical connections and fuses. A non-working fan might need a new motor or relay.
  • Flushing the cooling system should be done according to the manufacturer’s guidelines. This process removes rust, scale, and other deposits that can clog the system.

Also read 2022 Cfmoto Uforce 600 Problems

2. Hard Starting or Failure to Start

Starting problems can be frustrating and may indicate underlying issues with the fuel, ignition, or electrical systems. An insufficient battery may not supply enough power to crank the engine. Fuel system issues can prevent the engine from receiving the proper fuel-air mixture needed for combustion. Spark plugs that are worn out or fouled can’t ignite the fuel efficiently.

Detailed Solutions:

  • Test the battery with a voltmeter to ensure it holds a charge. It may be necessary to replace the battery if the battery is older than 3 years.
  • Inspect the fuel system from the tank to the injectors. Use a fuel system cleaner to help remove deposits from the fuel lines and injectors.
  • Check the spark plugs for signs of wear or fouling. Replace them with the correct type specified by the manufacturer. Ensure the spark plug gap is correctly set.

3. Loss of Power

In-depth Explanation: A loss of power can make your vehicle sluggish and reduce its overall performance. A dirty air filter can restrict airflow, leading to an inefficient fuel-air mixture. Problems within the fuel system, like clogged lines or a failing fuel pump, can restrict fuel flow. An obstructed exhaust can increase back pressure, reducing engine efficiency.

Detailed Solutions:

  • Replace or clean the air filter regularly. Consider the environment you’re riding in; dusty or muddy conditions may require more frequent changes.
  • Inspect the fuel system comprehensively, including the pump, lines, and injectors. A professional fuel system cleaning might be needed for severe cases.
  • Check the exhaust for blockages. Aftermarket modifications can sometimes cause issues; ensure any changes comply with the manufacturer’s specifications.

4. Engine Knocking

Engine knocking, or detonation can lead to significant damage over time. It occurs when the fuel-air mixture combusts prematurely. Using low-octane fuel, incorrect ignition timing or carbon deposits can contribute to this problem.

Detailed Solutions:

  • Always use the fuel grade recommended by CFMoto. Higher octane fuels can resist knocking better.
  • Check the engine’s timing. Advanced timing can lead to pre-ignition and knocking. Adjusting the timing might require special tools and knowledge.
  • Use a quality fuel additive designed to clean the engine and fuel system. This can help remove carbon deposits that lead to hot spots in the combustion chamber.

5. Oil Leaks

Oil leaks not only cause a mess but can lead to lower oil levels, resulting in increased engine wear or damage. Common sources include gaskets, seals, and loose connections. High mileage or rough riding conditions can exacerbate these issues.

Detailed Solutions:

  • Clean the engine and then run it to pinpoint the source of the leak. Pay special attention to common problem areas like the oil pan gasket, valve cover gasket, and oil seals.
  • Replace any damaged or worn gaskets and seals. Some seals can be replaced without major disassembly, but others might require more extensive work.
  • Ensure all bolts and fittings are properly tightened to the manufacturer’s specifications. Over- or under-tightening can cause leaks.

3. Electrical Problems

Electrical problems can be frustrating to diagnose, but some common issues can plague CFMoto UForce 800s.

1. Battery Issues

The most common electrical problem in any vehicle, including the UForce 800, is related to the battery. This could be due to a drained battery, loose connections, or corrosion on the terminals.


  • Check the battery charge: Use a multimeter to check if the battery is holding a charge. If it’s below 12.6 volts when the vehicle is off, it may need to be charged or replaced.
  • Inspect connections: Ensure the battery terminals are clean and tightly connected. Clean off any corrosion with a wire brush and tighten connections as needed.
  • Battery maintenance: Regularly check the battery’s health and keep the terminals clean to prevent future issues.

2. Faulty Wiring

Wiring issues, such as frayed wires, loose connections, or damaged insulation, can cause intermittent electrical failures or short circuits.


  • Inspect wiring: Look for visible damage to wires and connectors. Pay special attention to areas where wiring is exposed to the elements or could rub against moving parts.
  • Repair or replace: Damaged wires should be repaired with the proper gauge wire and electrical tape or heat shrink tubing. Severely damaged wires or connectors should be replaced.

3. Alternator Issues

During engine operation, the alternator charges the battery. A failing alternator can lead to poor battery charging, resulting in electrical issues.


  • Check the alternator: Use a multimeter to check the charging voltage at the battery terminals while the engine is running. You should see a voltage between 13.8 and 14.2 volts.
  • Replace if necessary: If the alternator is not providing sufficient voltage, it may need to be replaced.

4. Ignition Switch Problems

The ignition switch can wear out or fail, leading to issues starting the vehicle or electrical components not functioning when the key is turned.


  • Diagnose the switch: Check for signs of wear or damage. You may need a wiring diagram and a multimeter to test for continuity in different switch positions.
  • Replace the switch: If the ignition switch is defective, it will need to be replaced.

5. Fuse and Relay Issues

Blown fuses or faulty relays can cause specific electrical components to stop working.


  • Check and replace fuses: Inspect the fuse box for blown fuses and replace them as needed. Always use the correct amp rating for replacements.
  • Test and replace relays: Relays can be tested with a multimeter or by swapping them with an identical, known-good relay. Replace any faulty relays.

4. Brake Problems

Discussing the CFMoto UForce 800 and its brake problems requires a multifaceted approach, considering various aspects such as common issues reported by users, potential causes, and effective solutions.

Common Brake Problems

  • Brake Fade or Reduced Efficiency: Over time or under intense usage, especially in demanding off-road conditions, the brakes may exhibit reduced efficiency or fading. This can be due to overheating or wear and tear of brake components.
  • Squealing or Grinding Noises: Unusual noises when applying the brakes are often indicative of worn brake pads or rotors. These sounds may suggest that the brake components are due for inspection or replacement.
  • Soft or Spongy Brake Pedal: A brake pedal that feels softer than usual or goes closer to the floor before engaging the brakes can signal air in the hydraulic system, leaks, or a failing master cylinder.
  • Pulling to One Side When Braking: If the UTV pulls to one side during braking, it could be due to uneven brake pad wear, a stuck caliper, or issues with the brake lines.

Solutions to Brake Problems

  • Regular Maintenance: Regular inspection and maintenance of the brake system are crucial. This includes checking brake pads for wear, ensuring brake fluid is at the correct level and in good condition, and inspecting brake lines and connections for leaks or damage.
  • Brake Pad and Rotor Replacement: If brake pads or rotors are worn beyond their service limit, they should be replaced with high-quality components. This not only resolves noise issues but also restores braking efficiency.
  • Bleeding the Brakes: To remove air from the hydraulic system, a process known as bleeding the brakes may be necessary. This can help restore a firm brake pedal feel and ensure effective braking.
  • Caliper Service: Sticking or seized brake calipers can cause uneven braking and pulling. Servicing the calipers, which might include cleaning, lubricating, or replacing them, can solve these issues.
  • Using High-Quality Parts and Fluids: Opting for high-quality replacement parts and fluids can significantly impact the longevity and performance of the brake system. Cheap alternatives may offer short-term savings but can lead to more frequent issues down the line.
  • Professional Inspection and Service: If you’re experiencing persistent brake problems or if the solutions above do not resolve the issues, it may be necessary to seek professional help. A qualified mechanic with experience in UTVs, particularly CFMoto models, can provide a comprehensive inspection and undertake any necessary repairs.


As you see, here we discuss the major problems of Cfmoto Uforce 800 with their easy solutions. Following the abovementioned solutions and properly maintaining your UForce 800 can address these issues and ensure a smooth and enjoyable off-road experience.

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