Q: Car rattles after starting

asked by on

My car starts with a rattling sound, but then it goes away after driven a bit.

Hi. It’s difficult for me to say without hearing the noise firsthand, but there are a couple things that come to mind. The first is the hydraulic valve lash adjusters. The lash adjusters use oil pressure to keep the lash between the rocker arm and valve at a constant rate. When the engine is cold, it sometimes takes oil awhile to reach the adjusters. As a result, you have a rattling or tapping noise when the engine is cold. This is a common problem with the vehicle you have. The second thing that comes to mind is an exhaust leak at the manifold. This is more noticeable when the engine is cold and often goes away as the engine warms up. This is because the exhaust manifold metal expands. My best advice is to have a trained mechanic, such as one from YourMechanic, listen to your vehicle’s noise.

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. Car rattles after starting

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 temperature gauge is going from cold to hot in a half mile. The hose going to the thermastat is HOT. Does it sound like the the

If the thermostat is open you will get the hot bottom and top hoses. Check to make sure the fan clutch is locking up and giving enough air flow across the radiator. If you have electric fan style, then is...

Q: Misfiring Cylinder after replacing the plugs three months ago. Is it a chance that the whole batch of plugs may have been defective?

Hi there. The best thing to do is switch the coil over from cylinder 3 to cylinder 1 and see if the misfire continues with cylinder 3 or if it changes to cylinder 1. If the misfire stays with cylinder...

Q: I have a 2002 Dodge Durango that keeps stalling while running. The car gives no warning sign and dies with no apparent patter

Hi there. Generally speaking, when a car will start but stalls randomly it will be due to either an electrical short in the ignition system or a fuel restriction problem, misfiring fuel injectors or other faulty components. Since there are...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...