Exhaust smell into the cabin

[Jmabry66]

So I know that this is a super open ended question, but it's been getting worse lately and if you roll the back window down its worse. Any advise on where to begin checking or what part of the exhaust may be causing this?

Thanks in advance,
Josh

 

[diverscale]

So I know that this is a super open ended question, but it's been getting worse lately and if you roll the back window down its worse. Any advise on where to begin checking or what part of the exhaust may be causing this?

Thanks in advance,
Josh

opening the back window will cause even a perfect exhaust system to smell into the car, because of the aerodynamic of a car rolling. Negative pressure on the rear will get the back air into the vehicle.

A exhaust leak is easy to find, you will probably be able to find the general location just by starting the truck and lay down on a bed just beside the vehicle. Use a flashlight and you might see a small black spot at the leak.

 

[teerock]

To check the location of the leak, pull a vacuum line off the intake and suck a small amount (1-2oz) of transmission fluid into the intake through the vacuum line.