Q: Knocking sound in the engine
I can hear a knocking sound in the engine. Car cranks up and starts.
Recommended Services
| Noise from engine or exhaust Inspection | $94.99 - $114.99 | Get a Quote |
A knocking sound in the engine generally means that the bearings in the engine are worn. When the bearings are worn, this allows the parts of the engine to have excess movement, causing the knocking noise. I would ask for help from one of the mechanics at YourMechanic to diagnose what is causing the knocking noise in your engine, so they can recommend a repair.
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
What others are asking
Car won't go into gear.
When you shift through the gears does your car want to roll freely at all? If the car will roll this is indicative of a failure of your automatic transmission that would need to be diagnosed by a certified transmission...
ABS light on even though brakes work fine
The most likely failure is the rear end is having problems with internal bearings of the pinion gear. The noise you hear is the gears clashing in the rear end due to the bearings in the pinion gear. The ASB...
Engine knocking
Knocking in your engine, also described as pinging, can mean one of several problems. Some may be easily fixed while others may indicate major damage. The knocking sound often occurs when the fuel and air mixture is incorrect, which causes...
Groaning sound when turning steering wheel
It sounds like your power steering pump may be low on fluid, the fluid may be dirty or have air in it, or the pump itself could be damaged. Sometimes, there may be some air trapped in the system and...
Brake lights not working
The stop lamp switch most likely failed and is not making contact internally. The switch may need to be adjusted or replaced. I recommend seeking a technician, such as one from YourMechanic, to come and test your vehicle's brake lights...
Squaling noise
In most cases, the squealing noise from under the hood is caused by worn out or damaged belts, including the serpentine belt, AC belt or power steering drive belt. If your 2005 Altima has more than 50,000 miles, it may...
does a2004 kia optima lx have anti brakes
Hi there: The 2004 KIA Optima LX V6 offers optional 4-wheel ABS systems. It really depends on whether or not the option you have came with this optional upgrade. To determine this, you should call a local KIA dealership and...
Defrost doesn't heat up until I start driving
Hello: Although it's possible that you may have an issue with your heater, it's difficult to determine this without physically inspecting your Dodge. However, the heating system receives it's heat from coolant that circulates through your motor. It takes some...
My check engine light is on after getting into a wreck last night in my 1995 Ford Thunderbird
If the check engine light is on then the computer needs to be scanned for codes. The codes will give clues as to what is causing this to occur. It may be related to the accident or it may be...
Related articles
Top 10 Bad Driving Habits That Damage Your Car
Even the best drivers are guilty of bad driving habits. Riding the brakes, not warming up the engine, and ignoring warning signs will damage your car.
A Buyer’s Guide to the 2012 Mercedes-Benz ML350 BlueTec
The The 2012 Mercedes-Benz ML350 BlueTec is a safe vehicle that offers many standard features such as solid wood accents, thick leather on the seats, and memory buttons to save your seating position. The ride is comfortable as it has...
How to Get Mercedes-Benz Dealership Certified
Mercedes Benz dealerships offer automotive technician jobs to those certified through Mercedes-Benz's Automotive Systems Technical & ELITE programs.
Browse other content
Services
Cities