Q: Hear knocking at bottom of engine

asked by on February 01, 2016

I hear knocking at the bottom of the engine.

Car is making a noise Inspection $94.99 - $114.99 Get a Quote

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.

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・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Engine Fuse Box
Yes, you should replace the entire fuse box. The reason for this is that it is quite likely that when the box burned other connections inside the fuse box were also damaged. This will in fact affect the vehicle starting...
All dash lights were on for two days and now there is no power, no crank, and shorts when jumping.
If you were able to start and drive the vehicle for two days with all the warning lights on before this, did you notice any other issues during this time? You are going to want to start by replacing the...
Car won't start and the cd player ejected a cd without me touching it. What's going on?
Hi and thanks for contacting Your Mechanic. You had mentioned that your battery had 10.1 volts at the time and said that is what the battery usually has. A fully charged battery will have 12.6 volts, a 75% charged battery...
Stuck throttle when driving. 1997 Ford Ranger
Hi there - first task is to check for problem codes, whether the Check Engine light is on or not. Most auto parts stores will do this for you for free on a "time-available" basis. Check to see if the...
Car beep sound while locking and unlocking
Hi there. Since your car is brand new, it is probably best to contact the dealership you purchased the vehicle from to receive a suggestion on how to resolve this issue. To my knowledge however, in previous years Camry's, the...
Air conditioning and heater will turn on sometimes.
Check the wiring from the motor switch to the a/c and heating selection. Either the wiring is loose and is moving around causing the system to not operate properly or the switch has failed. If you need further assistance with...
Engine codes
A number of things may cause code P0171 to be triggered. As the code indicates, this means there is a lean fuel condition which may be caused by a lack of fuel supply or in some cases, a vacuum leak....
Grinding noise while turning left and right
Hello, thank you for writing in. Grinding noises like this can be incredibly hard to diagnose. The power steering pump may be to blame. Even if it is not hard to steer, it can make similar noises. Keep that in...
Is it okay to use 5w-20 in my 2004 buick lesabre
You can use 0W-30, 5W-30, and 10W-30. You cannot use 5W-20 oil in ANY operating conditions in this vehicle as the viscosity will be too low once the engine is warmed up. Page 5-15 of the LeSabre Owner's Manual (https://my.gm.com/content/dam/gmownercenter/gmna/dynamic/manuals/2004/buick/lesabre/2004_buick_lesabre_owners.pdf)...

Related articles

A Buyer’s Guide to the 2012 Ford Flex
The The 2012 Ford Flex takes on a completely different look when it comes to a CUV. The Flex can tow up to 4,500 pounds and seat seven passengers comfortably. It also has lots of standard features that its competitors...
A Buyer’s Guide to the 2012 BMW 3-Series
The The 2012 BMW 3-Series has been wildly popular in the US since it was first introduced in 1975. This series of luxury sedans sets itself apart from other luxury models with its superior performance and driving dynamics. No matter...
The Best Used Cars to Buy If You're a Construction Worker
If If you're a construction worker, you don’t have to worry about hauling a whole lot of supplies and materials to the site – that’s the boss’s problem. As long as it’s big enough to hold your tools (and most...