- Clogged fuel filter: A dirty fuel filter will limit fuel flow to the engine, which can cause your ATV to lose power.
- Faulty fuel pump: A failing fuel pump won't be able to deliver enough fuel to the engine, especially at higher speeds when the engine needs the most fuel.
Electrical Problems
- Loose or corroded electrical connections: Loose or corroded electrical connections can interrupt the flow of electricity to the engine's ignition system, causing it to lose power.
- Faulty ignition coil: A faulty ignition coil won't be able to produce enough spark to ignite the fuel in the engine's cylinders.
Engine Problems
- Dirty air filter: A dirty air filter will restrict airflow to the engine, which can cause it to lose power.
- Cylinder head gasket leak: A leak in the cylinder head gasket will allow coolant to enter the engine's cylinders, which can cause it to lose power.
- Piston or ring damage: Damaged or worn piston rings or pistons can cause your ATV to lose compression, which will lead to a loss of power.
- Low compression: Low compression is usually caused by one of the above problems, but it can also be caused by worn piston rings or a leaking cylinder head gasket.
Drivetrain Problems
- Loose or broken drive belt: A loose or broken drive belt will not be able to transfer power from the engine to the transmission and can cause your ATV to lose power.
- Faulty transmission: A failing transmission will not be able to transfer power from the engine to the wheels, which can cause your ATV to lose power.
