Q: Q: Engine knocks

asked by on

The engine knocks on my vehicle.

Engines can make a lot of different noises when there is something wrong. If it is extremely loud and consistent, your engine will need replaced. If it is ‘knocking” when the engine is cold and is quiet when it’s warm, it could be “piston slap”. This is worn cylinder bores and piston skirts. If the noise is only when the engine is hot, it could be “pinging”. Also known as pre-combustion, or detonation. This happens when the engine is overheating.

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: Engine knocks

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: Car makes sound like muffler is loose.

Hi there. Noises can be deceiving; they resonate and are difficult to pinpoint. In a case like this, your best bet is to take your vehicle to a professional, such as a technician from YourMechanic to have it inspected.

Q: car won't start chugs

It's possible that your Saturn SC2 has a broken timing belt. That will make it sound strange when it's cranking and will not start. You can listen back by the gas tank and try to hear if the fuel pump...

Q: Check Hybrid System light on

Hi, there is a recall for Prius' of that year. Typically when this happens the car is not able to be driven so it sounds like your issue is different. A certified technician, such as one from YourMechanic, would be...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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...