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!

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: Service stabilitrak and three traction lights are on

There is a possibility that the lights may be related to the code, but the system will have to be scanned and the trouble codes pulled to be sure. You may have a couple different things going on with the...

Q: cracked exhaust manifold pipes/headercar will not go fast revs high but No speed ?Cause?

In order of priority, if you have a cracked exhaust manifold (leaking carbon monoxide), that actually has to be fixed first or at least coincident with the repair(s) to the engine/transmission. The principal danger from exhaust leaks (carbon monoxide) is...

Q: Thumping noise after replacing motor mounts & tranny

Hello. The thumping noise that you hear is probably coming from one of the motor mounts that was replaced. The bolts that hold the mount down could be loose or it is possible that one of the mounts are defective....

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
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.