Q: When I accelerate to engage the next gear I hear a knock sound from the engine

asked by on

Knocking sound when I increase speed to engage next gear

My car has 200000 miles.
My car has a manual transmission.

Hi there. Knocking noise from the engine is not good. Assuming, it is the engine knocking. A heavy consistent knock could be a connecting rod. A hollow knock (louder cold and quieter warm) could be a piston. Metal contamination in the engine oil and the engine is short lived. Piston rattle and you can buy some time, by being nice to the engine. Letting the engine warm before driving and low rpm shifts.

Noises can be difficult to isolate. I recommend having your vehicle’s knocking sound be diagnosed by a certified technician, such as one from YourMechanic.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. When I accelerate to engage the next gear I hear a knock sound from the engine

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Noise coming from front left side of engine.

Hello. Most of the time when this noise occurs from this engine, it is a timing chain problem. To isolate this, I usually remove the engine drive belts and run the engine to see if the noise disappears. If it...

Q: Four-wheel drive thumping noise. 2006 Mazda B4000

Hello. It sounds like the transfer case is going bad causing the thumping noise you are hearing. The transfer case transfers power to the front wheels so that all four tires are working during four-wheel drive. If the transfer case...

Q: Q: No start

Hi there. As you already know, repairing and replacing components without proper diagnoses can be expensive and time consuming without resolution. The engine turning over very fast, would lead me to performing a compression test. This will also give you...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.