Q: Exhaust manifold leak. Headers or stock manifold?

asked by on

I have a 2003 Ford Expedition with a 5.4 2WD. It has a slight exhaust leak from the exhaust manifold. I noticed that there is one nut missing from either side. So each side has a stud missing a nut. They are rusted and very hard to reach since there is little clearance especially with the strut towers. I ordered a set of JBA shorty headers and the muffler shop I took it to l, took off the wheel fenders to look closer and he told me he wouldn't do it. He said not to put headers on cause I would have lots of problems down the road with the gaskets cause I can't retighten the bolts. Can you tell me if you can at least replace the gaskets? Should I just return the headers and get stock manifolds?

Thanks Reuben

My car has 183000 miles.
My car has an automatic transmission.

The manifolds on this engine warp and would need to be replaced to stop the leak. The manifold studs would also need to be replaced with the newer stainless steel type of studs and nuts. I agree with the muffler shop about the headers. On another note, the headers would be even noisier then the original manifolds. I recommend having a mechanic, such as one from YourMechanic, inspect the leak and replace the manifolds for you if needed.

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. Exhaust manifold leak. Headers or stock manifold?

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: double-lock keychain horn very weak 2007 ford f150

Hi there. Usually when the vehicle horn is weaker than normal, it's an indication of a problem with the horn relay. It might be a good idea to replace the FOB remote battery first as this is a fairly inexpensive...

Q: I changed th alternator I've changed all the fuses and whenever I turn on the lights the battery drains dead and the windshield wi

This may be a voltage regulator problem. As you may know the voltage regulator manages the amount of power the alternator supplies to the battery and other accessories. When this is not working correctly, the battery can be over charged...

Q: Q: Car not starting.

I would say the most common problem if you reversed the leads would be a blown fuse. If it's not that then you may have melted a wire or even fried the ECM. I would suggest getting a technician such...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.