Q: Q: Knocking sound

asked by on

The car would start up and then quit. Finally, I got the car started and there was a knocking sound.

Hello. It sounds like there is something broken in the engine internally. A push rod could be bent, a lifter could be stuck, or the engine bearing could be messed up. Have your vehicle’s noise inspected by a certified technician, like one from your mechanic, to determine whether your engine would need to be replaced or rebuilt in order to fix this problem.

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. Q: 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: Q: overheating problem

Thanks for writing in about your Hummer H2. Let's cover the basics of diagnosing a overheating issue. First, verify the actual temperature at the thermostat housing. Cooling system (and cap) has probably been pressure tested by now. If it tends...

Q: Knocking/ Pining/ Dieseling noise

Hi there. If your Tacoma is a 4x4, then check the transfer case and see if that is where the noise coming from. If it is, then the chain in the transfer case is slipping and needs replaced or repaired....

Q: Cost to change old fuse 2008 Mazda 3

Fuse replacement averages $72 to $91 but you can get an exact quote if you click on "Get a Quote" at YourMechanic's fuse replacement service page. Fuses are located in a variety of spots in the car including in an...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.