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・Fair and transparent pricing

Get a quote

What others are asking

Q: Daytime running lights aren't working they stopped working after I had my alarm taken out is it possible the dealership turned the

If the problem started immediately after the car was released to you, in all probability they did "something" but what the something is could have a lot of different causes, electrically speaking. The dealer should be able to resolve it,...

Q: Battery won't charge

Your 2008 Lexus LS460 may need to be moved to have easier access to the battery. The battery needs to be checked and the starting system operations verified. The battery could be dead, or there could be another problem within...

Q: Cranks great will not fire up - 1992 Mazda 929

The antenna wire should not be connected to anything that would cause the car to not start, especially if it is getting power to crank. I would suggest checking to see if the spark plugs are getting fuel to them....

Related articles

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...