Skip the auto shop - Our mechanics make house calls

Q: Exhaust gasket continues to blow

asked by on

I have a 2008 mazda 3 i sport 2.0l 4cyl and i put a full cat-back exhaust on it, and aftermarket headers. the header is a two piece header and the gasket between the header and basically the down pipe has blown a numerous amount of times, i have replaced it several, but nothing seems to work, thanks

My car has 55555 miles.
My car has an automatic transmission.

A: Hello there, a few different faults can cau...

Hello there, a few different faults can cause the exhaust gasket to continue to fail. The most likely would be excessive back pressure, EGR faults, high torque on the mounting bolts, or a clogged catalytic converter.

I'd recommend getting some help from a qualified technician, they will be able to diagnose your exhaust system and perform any repairs required.

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・Save up to 30%

Get a quote

What others are asking

Q: Car sputters and dies

Hello. It will first be necessary to find out why the Check Engine Light is on. This could be the reason your car is stalling. It is also possible that the is a problem with the fuel system, as this...

Q: Transmission issue 2008 Chevrolet Silverado 1500

Your transmission may have a defective forward sprag unit inside the transmission that needs replaced. Have the transmission mechanic follow technical bulletin 08-07-30-027 that the manufacturer put out in 2008. There is a list of failed parts and procedures that...

Q: When start Mazda Protege, there is a squeak in the engine area

The noise is coming from the serpentine belt. The belt is most likely loose or glazed over from needing to be replaced. Check the belts for tightness by twisting it between your finger and thumb and it will be hard...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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.