Skip the auto shop - Our mechanics make house calls

Q: Loud Knocking Noise Coming From The Right Upper Side Under My Hood .

asked by on

The Car cranks up first try , runs And Drives but sometimes when i come to a complete stop it turns off by it self . And I Am Having A Loud Knocking Noise Under The Hood .

My car has 83000 miles.
My car has an automatic transmission.

A: It sounds like you could be having a fuel d...

It sounds like you could be having a fuel delivery issue if your vehicle is not able to stay running. It is also possible that your engines knocking sound could be part of the reason it is dying.

I would recommend having your vehicle inspected by a certified mechanic, such as one from YourMechanic, to diagnose the noise firsthand and determine if the engine’s valve train parts are in disrepair.

Once this has been done, I would also recommend having the fuel pressure tested and a visual inspection of the fuel system. The cause of this issue is likely to be found during these two inspections.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: My brake fluid light is on and won't go off

You can try lightly tapping the side of the master cylinder reservoir on your 2004 Pontiac Grand Prix. Sometimes the float for the level sensor sticks. If that does not help, you may have to replace the level sensor and...

Q: Engine stutters

It is possible that your engine could have a fuel issue of some kind. Considering that it is a hybrid, I would not overlook they electric motor for issues during this diagnosis. I would first recommend having your vehicle scanned...

Q: Car sputters and backfires under load

This sounds like one of the valves are sticking or a spring is weak or broken. You may also have a lifter that is holding the valve open after you go to 3500 rpm and will continue to hold open...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...