I have an 07 with the 5.9 and I can smell diesel fuel from the front of the truck when running. I have checked everything an there are no leaks of any sort that I can find. Just wondering if its normal to smell that. I have noticed the smell is more noticable after the truck has been idleing or cruising threw a parking lot at near idle. Thanks for any insight!

 

Find the leak! Not normal look for wet spots.