Q: Can a glow plug that's not walking cause a diesel knocking

asked by on

One of my glow plugs is not working and I'm getting loud Diesel knocking all the time could the glow plug be what causes diesel knock if you could help me more appreciated

My car has 100000 miles.
My car has a manual transmission.

Hi. It depends if the knock goes away after the engine warms up. If it does, then yes, this is contributing to the knock. What is happening is that the fuel and chamber is not hot enough for combustion and there is not enough compression built up in the engine yet. It is always best to test all glow plugs and replace if needed.

If the knock is not going away that is a good indication that the injector has failed. If you need help verifying the fault, a certified technician from YourMechanic can come to your car’s location to diagnose the knocking issue and move forward with repairs.

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. Can a glow plug that's not walking cause a diesel knocking

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: Steering wheel is locked

The battery in the keyless remote may be dead and will need to be replaced to see if this cures the problem. If you have a second one then try it and see if it works. If neither work then...

Q: Car is knocking when I hit the gas

Hi and thanks for contacting Your Mechanic. If the engine has a knocking noise, a sensor will not cause this issue. A timing belt will not cause a knock unless the timing belt has jumped a tooth. Other belts just...

Q: Car chokes when accelerating and when at a stop

Hi Nadia. The check engine light can come on for many different reasons. However, I believe your light is related to the symptom you've described. A catalyst problem wouldn't likely surface as this particular symptom. When you say the vehicle...

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...
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.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.