Q: Exhaust fumes leaking into the car

asked by on

I have had a problem recently with my 2008 Kia Optima leaking exhaust fumes up into the cabin while I am driving down the road. The car is pretty new still and I have only put 48,000 miles on since new. I know this is a problem somewhere near the engine by the sound of it. What is the fastest way to diagnose the problem part? I don’t want to replace the whole exhaust.

This concern could be caused by a cracked exhaust manifold. Is the Check Engine light on? If so, a certified, local mechanic, like one with YourMechanic, could diagnose the problem with a scan tool. Due to the poisonous nature of exhaust gas, I wouldn’t recommend trying to track this leak down on your own. There are a number of procedures that professional mechanics can use to track down exhaust leaks and exhaust fume penetration into the interior of the vehicle.

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 fumes leaking into the car

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: Rattling noise rpm jump

Hello there. It sounds like there may be a few things going on. The noise could be a number of things, such as the belt idler, engine misfire, injectors, engine mechanical damage, or the turbo. A rattling noise is not...

Q: Squealing when decelerating

Hello. Thanks for writing in about your 2000 Porsche Boxster. Most of the time this is caused by the pilot bearing in the rear of the crankshaft. When it fails it will make this noise at these times. I usually...

Q: do i need to replace both sensors

Only oxygen sensors that are DIRECTLY tested and fail need to be replaced. Please keep in mind that OBD trouble codes do not conclusively diagnose failed parts, nor could they. Consequently, the only way to condemn an oxygen sensor (or...

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...
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...
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...