- Spark Knock: This is a condition where fuel and air explode in the engine out of sync. This can occur due to several reasons, such as the build-up of carbon deposits, low-quality fuel, or a faulty exhaust system.
- Loose/Worn engine components: Worn or damaged engine components, such as pistons, connecting rods, crankshaft bearings, or wrist pins can generate a knocking sound.
- Improper valve clearance: Loose or tight valves clearance can cause ticking, knocking, or tapping noises.
- Fuel Injection System Issues: Malfunctioning of fuel injectors, clogged injectors or a failing fuel pump can cause a knocking sound due to the incorrect fuel-to-air ratio.
- Excessive Engine Clearance: When engine components like the piston, piston ring, or crankshaft bearing have excessive clearance, they can lead to knocking sounds.
- Issues with the fuel rail or injector: If there's a problem with the fuel rail or injector and one of the cylinders isn't getting as much fuel as it needs, it can cause a knocking sound as the engine tries to compensate for the lack of fuel.
Addressing the knocking noise:
If you hear knocking noise when accelerating, get your car to a mechanic as soon as possible. Knocking noises can be an early warning of a potentially serious engine problem, so it's essential to have it checked out promptly to avoid more significant damage and expensive repairs. The mechanic will be able to diagnose the exact cause of the sound and perform necessary repairs or adjustment.
