Q: Noise coming from exhaust cam sprocket.

asked by on

I changed the timing belt and new can sprockets. The noise happened ever since I changed the timing belt and not the sprockets. The noise happens only at an idle. It does not affect the idle, mileage, or driving on anyway. When we accelerate and stay on the gas the noise will go away.

My car has 90000 miles.
My car has an automatic transmission.

Hi there. I would need to know if you replaced your timing belt tensioner and pulley? The pulley bearing wears with mileage and the tensioner weakens with age as well. If the pulley bearing is worn or the tensioner is weak and flopping around, then noise is generated. I recommend having a certified professional from YourMechanic diagnose the noise and perform the needed 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. Noise coming from exhaust cam sprocket.

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: Sudden jerk upon acceleration, low gas mileage - 2013 Range Rover

Hey there, thanks for writing in about your 2013 Range Rover. You may have a problem with the throttle control that may be dangerous to drive. There are many other possibilities, such as a vacuum leak, faulty mass air flow...

Q: The check Fuel Fill Inlet light is on in 2011 Ford Fusion. It has no fuel cap.

The reason that your gas cap light has come on is likely because the gas cap is missing. I would strongly recommend purchasing a new gas cap to put on. This will not only clear the check engine light but...

Q: could it be the transmission

Hi there. Usually the transmission does not produce smells when it fails, but this does not mean that the transmission is not at fault. There is also the possibility that a brake caliper locked up and producing a smell due...

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.