Skip the auto shop - Our mechanics make house calls

Q: Possible exhaust manifold leak

asked by on

This morning on my way to work my truck began making a loud exhaust noise. It does not sound like a leak in the actual exhaust line. It sounds more high pitched, and it is coming from the engine compartment. Also, it sounds like it is originating from the drivers side only. I am no expert but I have a suspicion its an exhaust manifold leak. I was unable to visually inspect it today because it was too dark.

Is there anything else with similar symptoms or any way to confirm its the exhaust manifold?

-Travis

My car has 275000 miles.
My car has a manual transmission.

Hello and thank you for contacting YourMechanic. The exhaust manifold will make a hissing sound or a ticking sound depending on the leak and how many leaks there are. If possible, get a broom stick and put it against the exhaust manifold and put the other end on your ear. Listen for the loud tick or hissing noise that will transfer through the stick if you are unsure where it is coming from. A lot of the time, the donuts that are in a wide pipe that connect to the exhaust manifold will burn through making the same sound. Check the connections to the wide pipe and check all of the exhaust gaskets for leaks. Replace the gaskets that are burned through. It is hard on the exhaust valves to leave a gasket burned on the exhaust manifolds. If you need assistance finding the exhaust leak, then seek out a professional, like one from YourMechanic, to inspect the vehicle and replace the exhaust manifold as necessary.

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!
  1. Home
  2. Questions
  3. Possible exhaust manifold leak

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: Leak

Without any information about the vehicle, I can say this. Many cars today have oil change intervals of 7500 miles and even up to 15,000+ miles. Going 7000 miles between oil changes is generally not going to be the cause...

Q: Exhaust sound

The exhaust would need to be inspected to determine the cause of the noise; it could be coming from the muffler, or indicate a problem with piping, or the converter. I recommend that you have a mechanic, such as one...

Q: Question about driver side break

The information and description is a bit limited but I can do my best to assist you. I'm not quite sure I know what you mean when you say one caliper looks longer than the rest? The front brakes...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.