I don't remember for sure since the last truck I had with a round air filter was in the early 80's and it had a carb but when I checked my filter on my 89 (see sig) a few weeks ago it reeked of gas. I just don't remember if this is normal or not for this type setup. I checked to see if one of the injectors was dripping right after shutting the motor off and I'm not seeing any drips. It starts and runs just fine and the gas mileage seems ok. My thought process is this can't be happening while it's running since air is rushing in so it almost has to be happening after it's shut down.