Skip the auto shop - Our mechanics make house calls

Q: Hear knocking at bottom of engine

asked by on

I hear knocking at the bottom of the engine.

Unfortunately, there can be several different reasons that could duplicate the sound of a knock in the engine. With the information provided being limited, it is difficult to determine what the cause of the knock is. In a best case scenario, I would recommend checking the level of the oil, and if it is low, adding the appropriate amount and try starting your Kia Rio to see if the noise persists. If the problem remains, it may be time to enlist the assistance of a certified mechanic to go over your Kia with you. They will be able to diagnose your engine’s knocking noise and perform the necessary repairs to get your vehicle running again.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Hear knocking at bottom of 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: 2003 Kia Sedona starts and runs for one minute then dies. Restarts and does the same thing. Threw a code the other day of cylinder

Hello. Thank you for writing in. At first the issue sounds like an electrical problem. There are a number of sensors that will cause the engine to stall. Some of them are not monitored by the computer and will not...

Q: My car is making a knocking noise - 2003 Toyota Corolla

Hi there. From the description you have provided, the knocking noise in your engine is serious. The engine oil light coming on while driving down the highway, then quit running is equally concerning. Assuming you have had the engine's oil...

Q: Oil drain bolt leaking

Hi there. Unfortunately, these things do happen as the oil drain plug is removed and installed many times during the life a vehicle. Was there a drain plug gasket on the drain plug you installed? If not, this will definitely...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.