Updated: Feb 1
✔ This article has been fact checked.
An exhaust manifold leak can be a frustrating problem for any car owner. It can cause a loud noise when driving and can also decrease the performance of your vehicle.
A temporary fix for an exhaust manifold leak or gasket leak is to use exhaust cement putty, exhaust tape, or an exhaust epoxy. JB Weld can also seal an exhaust leak for a short period of time.
In this article, we will explore various methods for finding and temporarily fixing an exhaust manifold leak.
Table of Contents:
What Is an Exhaust Manifold Leak?
The exhaust manifold is a component of your car's exhaust system that collects exhaust gases from the engine and directs them through the exhaust pipe. A leak in the exhaust manifold can allow these gases to escape, which can cause a variety of problems.
There are various exhaust manifold leak symptoms such as unusual rumbling and tapping sounds, a strong smell of fuel, and reduced engine performance.
How to Find Where an Exhaust Leak Is
There are several methods you can use to find where an exhaust leak is coming from.
Soapy water method: One of the most common methods for finding an exhaust leak is to use soapy water. To do this, you will need a bottle of dish soap and a spray bottle filled with water. Spray the soapy water around the exhaust manifold and any other areas where you think the leak might be coming from. If you see any bubbles forming, it indicates a leak in that area.
Smoke machine method: Another method for finding an exhaust leak is to use a smoke machine. This tool is typically used by mechanics to find leaks in the exhaust system. It works by releasing a thick smoke that is drawn into the exhaust system. If there is a leak, the smoke will escape and be visible, indicating the location of the leak.
What Can I Use to Seal an Exhaust Manifold Leak?
There are several temporary fixes you can use to seal an exhaust manifold leak or exhaust gasket leak. Some options include the following.
Exhaust tape: This is a special type of tape that is specifically designed to withstand the high temperatures and harsh conditions of the exhaust system. It is a good choice for sealing small exhaust leaks. (see exhaust tape here)
Exhaust cement / putty: Another option for sealing an exhaust manifold leak is to use exhaust cement or putty. You can use a high-temperature cement or a ceramic-based putty specifically designed for the exhaust system. (see exhaust cement / putty here)
Exhaust epoxy: Another option for sealing an exhaust manifold leak is to use epoxy. This is a strong adhesive that can be used to seal small holes and cracks in the exhaust manifold. (see exhaust epoxy here)
While these may be good options to temporarily fix an exhaust manifold gasket leak, you should check often to see if the exhaust leak reappears and replace the exhaust manifold as soon as possible.
Can You Use Aluminium Tape On an Exhaust?
It is not recommended to use aluminium tape on an exhaust manifold. While aluminium tape is resistant to high temperatures, it is not designed to withstand the constant vibration and movement of the exhaust system and may not stick to the exhaust surface properly.
Aluminium tape is likely to come loose or peel off over time.
Can You Put Gorilla Tape On an Exhaust?
Gorilla tape is a strong, durable tape that is often used for a variety of repair tasks. However, it is not recommended to use it on an exhaust manifold. While it is strong and durable, it's not able to withstand the high temperatures of an exhaust system.
It is also not designed for the constant vibration and movement of the exhaust system. It is likely to come loose or peel off over time.
Can You Put Electrical Tape On an Exhaust?
It is not recommended to use electrical tape on an exhaust manifold. While electrical tape is fairly resistant to high temperatures, it may not resist the high temperature of an exhaust pipe, it is also not designed to withstand the constant vibration and movement of the exhaust system.
Electrical tape when used to seal and exhaust leak is likely to come loose or peel off over time.
Will JB Weld Hold Up on an Exhaust Manifold?
JB Weld is a strong adhesive that is often used for a variety of repair tasks. It is able to withstand high temperatures and is resistant to vibration and movement.
However, it is not recommended to use it on an exhaust manifold for long period of time. While JB Weld may hold up for a short period of time, it is not a permanent solution and will eventually break down due to the constant exposure to high temperatures and movement.
Though JB Weld can be a good temporary fix for an exhaust manifold gasket leak, it should be replaced with something more suitable as soon as possible.
How Much Does It Cost to Replace an Exhaust Manifold Gasket?
The cost to replace an exhaust manifold gasket will vary depending on the make and model of your vehicle and the location of the repair shop.
In general, you can expect to pay between $200 (£148 or €162) and $600 (£444 or €487) for this repair.
Keep in mind that this is just an estimate and the actual cost may be higher or lower depending on the specific circumstances of your repair.
Can You Drive With a Leaking Exhaust Manifold?
It is not recommended to drive with a leaking exhaust manifold. A leak in the exhaust manifold can allow harmful exhaust gases to escape, which can be dangerous for you and other drivers. It can also decrease the performance of your vehicle and cause a loud noise while driving.
If you decide to drive with an exhaust manifold gasket leak or any other exhaust leak, always keep your windows open.
What Happens if You Don’t Fix an Exhaust Manifold Leak?
If you don't fix an exhaust manifold leak, the problem is likely to get worse over time. The leak will become larger and more difficult to repair, which will increase the cost of the repair.
In addition, a leaking exhaust manifold can decrease the performance of your vehicle and cause a loud noise while driving.
Harmful exhaust gases can also enter into the cabin of the vehicle which can pose a health risk to the driver and other occupants of the vehicle.
It is important to address the problem as soon as possible to avoid further damage and ensure the safety of your vehicle.
An exhaust manifold leak can be a frustrating problem for any car owner. While there are options for a temporary fix for an exhaust manifold leak, it is important to have the exhaust leak properly repaired as soon as possible to avoid further damage and ensure the safety of your vehicle.
It is also important to remember that temporary fixes are just that – temporary. They are not a permanent solution and will eventually break down due to the constant exposure to high temperatures and movement.
It is always best to have the problem properly repaired by a qualified mechanic.
Wikipedia. "J-B Weld" https://en.wikipedia.org/wiki/J-B_Weld
Wikipedia. "Exhaust Manifold" https://en.wikipedia.org/wiki/Exhaust_manifold
Ed Ruelas. (Jan 7, 2016) https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-exhaust-manifold-gasket_2