Skip the auto shop - Our mechanics make house calls

Q: Knocking from the engine

asked by on

I can hear a strong knocking from my engine. I think it could possibly be a pushrod or rocker arm. The engine idles out with the knocking.

A: Although it is unlikely to be the cause, I ...

Although it is unlikely to be the cause, I would recommend checking your engine oil level. If your oil level is low, the engine will not be lubricated sufficiently enough to function properly and will therefore make knocking sounds as the metal engine parts come in contact with one another. If the oil level is at the specified level, I would recommend having an engine inspection performed by an engine diagnostics professional. It is possible that your engine may have suffered internal damage and may require replacement of valves, camshafts, lifters, and/or other internal engine parts. Only a thorough engine inspection will reveal the true causes of this issue.

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

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: Very high pitch sound coming from engine it's not the belt I think it is a tensioner... any suggestions?

To try to isolate where the noise is coming from. I would use a long hose to listen to each pulley as close as I could to each pulley. If I still cannot isolate the noise would try a long...

Q: shuts off after driving

If I was diagnosing your Hummer, I would want to know if there were any diagnostic trouble codes (DTCs) stored in any of the computer modules. I would see if the Check Engine light was on and use my scan...

Q: Wonky cruise control and rough idle on low gear D

Hello. P0770 is the code for a lock up torque converter shift solenoid malfunction. The lock up torque converter shift solenoid controls the fluid pressure of the torque converter, and the rate and timing at which it locks up. This...

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...
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...
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.