Q: Motor making strange knocking sound.

asked by on

I either need my motor rebuilt or need to figure out why my motor is knocking on the driver's side.

Hello, you may have something in the motor that is broken but a common knocking noise with this car is from the torque converter flex plate. A technician, such one from YourMechanic, can listen to the sound to determine where the noise is coming from. A knock could be from piston slap. This is where the piston is worn so much that it hits the side on the cylinder wall making a knocking sound. It could also be a stuck lifter making a knocking from the pushrod or valve. This can usually be fixed with a motor flush that a technician can help you with. If the knocking is coming from the the bottom end of the motor you may need to have the a new motor installed because it could be a turned bearing or broken a or work connecting rod.

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. Motor making strange knocking sound.

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: Check engine light on & oil pressure dropped

Hello. It is possible that you are getting a false reading as a result of a faulty oil pressure switch. It is also possible that there is an oil leak and that’s what is causing the oil pressure to drop....

Q: Car not shifting into overdrive.

The problem can be as simple as the transmission fluid and level. Make sure the level and fluid condition (should be a reddish color) are as they should be. If the fluid is not good, there can be mechanical issues...

Q: ABS, Rough shifting

Hello. The only speed sensor located in the rear of the vehicle will be located in the differential housing. This may be the sensor that requires attention. If our transmission is experiencing shifting problems in first gear, and your speedometer...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...