Skip the auto shop - Our mechanics make house calls

Q: Exhaust leaking into cabin

asked by on

Exhaust smoke is coming in through the vents on the inside of the truck.

A: Hi. First thing to note is you should not b...

Hi. First thing to note is you should not be getting exhaust gases into the cab through the a/c vents unless you have an engine that is leaking exhaust. My recommendation is to have your engine checked for exhaust leaks, focusing at the engine exhaust manifolds. If you continue to see smoke coming out of your vents, then it is most likely coming from the heater core that is leaking coolant causing smoke to emerge. My recommendation is to have a mechanic come to you, like one from YourMechanic, to inspect and diagnose your problem.

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: I think we need to replace the positive battery cable and contact.

Hello. From what you describe it seems that there's some sort of intermittent electrical issue. Bad battery cables can cause the symptoms you are experiencing, so I recommend inspecting and replacing them if they are corroded or worn. A few...

Q: Knocking noise from engine and loss of power

The illumination of the check engine light means that diagnostic trouble codes were set during this incident. The codes are probably "related" to the knocking noise. If there was a mechanical failure in the engine, these codes could have simply...

Q: Car failed smog check

Your gas tank contains an evaporative emissions system which prevents fuel vapors from entering the atmosphere. There are two major valves (purge and vent) which control this system in addition to a lot of hoses. Any one, or multiple, items...

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.