Q: New exhaust gasket and manifold, still have exhaust leak.

asked by on

I recently had to replace the exhaust manifold in my truck because it was cracked and when installing the new exhaust manifold and gasket the tech told me that the head was warped (I'm assuming cylinder head) and he couldn't get the new manifold to fit properly, so I still have a leak. He said that the head would have to be removed and machined (which I'm afraid will be too costly), and that if I didn't do this the new manifold would eventually crack as well. Are there any other potential problems that could arise if I don't machine the warped head and just drive with an exhaust leak? It seems like a fairly minor leak, but I don't wanna take any unnecessary risks. Thanks!

My car has 151000 miles.
My car has a manual transmission.

The trouble with small exhaust leaks is that they always turn into large exhaust leaks. The hot gas leaking past the gasket will eventually burn up the gasket making the leak worse. If not corrected, it will also burn the surface of the exhaust manifold. It rarely goes so far as to burn the cylinder head, but that can happen in extreme cases. To make matters even more complicated. having an exhaust leak also allows air to enter the exhaust stream and messes with the oxygen sensor reading. Mixture too lean trouble codes will follow as the system shifts rich to try to correct. So, if you want to keep this truck, you need to get this fixed. I’m not sure I buy the line about the head being warped enough to prevent the manifold from fitting, maybe you should get a second opinion on this. You can have this done by contacting Your Mechanic. They will send a technician to your home or office to check out your exhaust leak and let you know what can be done about it.

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. New exhaust gasket and manifold, still have exhaust 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: Ticking noise in engine does it need valve adjustment??

Hi there. The valves make a ticking noise as they wear, and in order to do any kind of valve adjustment you would need to have the valve clearance checked. If it needs adjustment, then the valve lash adjuster (also...

Q: My speedometer, rpm gauge and fuel gauge are not working; possible gear slipping and high rpm.

Hi there. For the electrical issues on the dash that are not working properly, I recommend that you have your battery check and loaded. The battery could have 12.6 volts, but if a cell is burnt or damaged, the battery...

Q: Hi, I would like to know if I can install an OEM AC for Jeep Renegade Sport 2017. If yes, how much would cost ( kit + install

It would be difficult to determine the exact cost of all of these parts without checking with your local parts dealer. I can say that it is very likely with installing a system such as this on your vehicle and...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...