The fuel pump supplies the engine with fuel. If it fails or is clogged, the engine may not receive enough fuel, which can cause it to stumble and lose power.
2. Clogged fuel filter:
The fuel filter helps clean and removes impurities from the fuel before it enters the engine. If it is clogged, the engine's fuel supply can become restricted, causing it to stumble and stall.
3. Faulty fuel injectors:
Fuel injectors are responsible for spraying the correct amount of fuel into the engine's combustion chamber. If an injector is clogged or damaged, it may not spray enough fuel, which can cause the engine to stumble.
4. Vacuum leaks:
Vacuum leaks can cause the engine to run lean (too much air, not enough fuel) and stumble. Inspect all vacuum hoses for cracks or damage and replace as necessary.
5. Faulty ignition components:
Ignition components include spark plugs, wires, distributor, distributor cap, and rotor. If any of these components are faulty or worn, it can cause the engine to stumble and stall.
6. Incorrect fuel pressure:
Incorrect fuel pressure can also cause the engine to stumble and stall. The fuel pressure should be within the manufacturer's specifications; check the owner's manual for your vehicle's specific fuel pressure requirements.
