Q: What could be wrong with my engine?

asked by on

My car made a loud hiss sound and now has no acceleration along with still making the hiss, there is what seems to be a valve stem with nothing connected to it and I was wondering if that had something to do with it? There is a slight gassy smell coming from the engine on start up and when pressing the gas

The sound may be due to a vacuum leak and that would include the PCV and EGR systems. There are other possibilities but initially the latter possibilities would be considered first. To get this problem investigated and resolved, your best bet is to request an unusual noise diagnostic - suspected vacuum leak. If you request that service, a certified Mechanic, dispatched by YourMechanic right to your location, will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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. What could be wrong with my engine?

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: Car stalling at stops and red lights

From the description, it appears that there are a few things going on with your Chevy Impala. A leak in the power steering system will cause the power steering pump to make noise and eventually fail. There are also a...

Q: My mechanic says I need a throttle body with a vacuum hose for my 04 mercury mountaineer. I've found throttle bodies but none of them mention a vacuum hose.

Hi there. The best thing would be to check the throttle body that is currently on the engine. If the throttle body has vacuum hoses to it, then you would need to get a throttle body with a vacuum hose....

Q: Q: Radiator leaks

Hello there! Leaking coolant/water from a point near the motor can come from a few things: On your vehicle specifically, a coolant hose runs underneath the distributor and the distributor seal often leaks. This causes used engine oil to come...

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...
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.