Skip the auto shop - Our mechanics make house calls

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.

A: Hi there. Knocking noise from the engine is...

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?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: The car I'm interested in buying has an engine knock

Engine knock by definition means the combustion taking place is mistimed or improperly detonated. More technically it means the explosion(s) has taken place partially or completely outside of the "envelope" (or area in the cylinder that is designed to push...

Q: Loud clicking noise from top of engine and oil leaking after driving

Hi there. The oil leak needs to be found first. If it is leaking a lot of oil or if the oil filter is leaking, then the low oil level will cause these symptoms. Once the oil leak is found...

Q: Car blowing hot air

Hi. Symptoms such as these are commonly caused by a failed blend door actuator. The blend door actuator is the component that shifts the system from blowing hot air to cold air, if it fails in the hot position, it...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.