How Long Does an Exhaust Manifold Last?

You've probably heard of the exhaust manifold before, but that doesn't necessarily mean you're clear on what it does. In fact this system is very important in the operation of your vehicle. It connects the cylinder head to your engine's exhaust port. This makes it possible for the hot exhaust to travel through a pipe instead of seeping out into the air and the vehicle itself. The manifold can be made of cast iron or a set of pipes, it all depends on the vehicle you are driving.

Because this manifold is always cooling down and heating up as the gasses pass through it, it means the pipe is contracting and expanding regularly. This can be quite hard on it, and even result in cracks and breaks. Once this happens, the fumes will begin to leak. These leaks are very dangerous to your health since you'll be breathing in the gasses instead. As well it starts to decrease the performance of your engine.

With the exhaust manifold it isn't a question of whether or not it will fail over time rather it is a question of when it will fail. It's a good idea to have your exhaust manifold inspected by a certified mechanic from time to time, just so you can get an early jump on any cracks. In the meantime, here are some signs you can watch for that may indicate your exhaust manifold is in need of replacement.

  • Because your engine won't be running efficiently, your Check Engine Light will likely come on. You'll need a mechanic to read and then clear the computer codes.

  • Your engine may not work as well as it used to, as a failed exhaust manifold impacts engine performance in a big way.

  • There are sounds and smells that can also act as tip-offs. The engine can begin to make loud noises that you'll be able to hear, even while driving. If the exhaust manifold is leaking, then you'll likely be able to smell odor coming from the engine compartment. It will be the smell of the plastic parts that are located beside the exhaust manifold, which are now melting thanks to the heat that is leaking out.

The exhaust manifold connects the cylinder head to the engine’s exhaust port. Once this part fails, you will notice all kinds of things start to happen with your engine and overall vehicle performance. If you’re experiencing any of the above mentioned symptoms and suspect your exhaust manifold is in need of replacement, get a diagnostic or book an exhaust manifold replacement service with a professional mechanic.


Next Step

Schedule Exhaust Manifold Repair

The most popular service booked by readers of this article is Exhaust Manifold Repair. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Exhaust Manifold Repair reviews

Excellent Rating

(156)

Rating Summary
146
7
0
0
3
146
7
0
0
3

Brian

24 years of experience
200 reviews
Brian
24 years of experience
Hyundai Elantra L4-2.0L - Exhaust Manifold - Hanover, Pennsylvania
Brian informed me that there was an issue, other than the original situation, that would need work however, since it would require the vehicle to be on a lift, he would not be able to make that repair. He did however make the repairs that were originally requested.
GMC K1500 Suburban - Exhaust Manifold Repair - York Springs, Pennsylvania
Brian was absolutely the best most professional mechanic I ever hired. I would most definitely ask for his services again.

Shane

17 years of experience
199 reviews
Shane
17 years of experience
Hyundai Accent L4-1.6L - Exhaust Manifold - Hutto, Texas
Shane showed up early and promptly got to work. He finished the job in the allotted time. He helped save me hundreds of dollars. I really appreciate him.

Rashad

18 years of experience
53 reviews
Rashad
18 years of experience
Chevrolet Malibu L4-2.4L - Exhaust Manifold - Atlanta, Georgia
Rashad was great actually. He called me when he got the messages as well from his supervisor helping with the issue. We worked well making sure he has chance to start and finish the work on the car safely and well. It is nice and quiet for sure. Plus we saved some money too. Will use him again for the car for sure!!

Claud

8 years of experience
461 reviews
Claud
8 years of experience
Ford Mustang V6-3.8L - Exhaust Manifold - Detroit, Michigan
Did an excellent job on my car. Informed me about the possibilities that could happen while working on my car.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Related articles

P2035 OBD-II Trouble Code: Exhaust Gas Temperature (EGT) Sensor Circuit Low Voltage Bank 2 Sensor 2
P2035 P2035 code definition Exhaust Gas Temperature (EGT) Sensor Circuit Low Voltage Bank 2 Sensor 2 Bank 2 refers to the back of cylinders without the number one cylinder. Sensor 2 would be the second EGT sensor from the motor...
How to Prep an Engine Block for Paint
When When you are rebuilding an engine (https://www.yourmechanic.com/article/how-a-modern-engine-works), you’ll probably want to paint the engine block. It serves a few purposes including being clean and attractive in appearance, protecting from corrosion and rust, and offering a custom look, even matched...
How to Remove Cylinder Head Bolts
Removing Removing the head is a major step in removing the cylinder head (https://www.yourmechanic.com/article/how-to-buy-a-good-quality-cylinder-head). These head bolts hold the cylinder head to the engine block. The head bolts are long bolts that go through the cylinder head and head gasket...

Related questions

2002 Honda Civic wants to shut off when stopped

For something like that, start with my video "how to fix the car that idles poorly (https://www.youtube.com/watch?v=eQpPcdvSBks)." Try everything in that video. Take off the clam into the intake and the engine, spray throttle cleaner, clean the throttle up, and...

Is the Engine "interference" or "non-interference"?

Hey there. In the context of engines, interference timing refers to the use of a timing belt rather than a chain (https://www.yourmechanic.com/article/what-is-the-difference-between-a-timing-belt-and-a-timing-chain), such that when this belt breaks, the camshaft and other internal parts (like valves) will cause major damage...

Exhaust

The first thing you should have checked is the new muffler and exhaust to see if the exhaust is hitting a body part or a heat shield. This is very common in aftermarket exhaust repairs. I would recommend going back...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com