I have a 2008, 6.7, with a thousand miles. I went out today to get myself
familiar with how the fuel filter works, I turned the white **** and no diesel fuel came out. So I kept turning it until the plastic hose and **** came off and still no diesel fuel came out. My question is, is there any way the fuel is bypassing the fuel filter?

 

There maybe some slug , what ever in the bottom of the canister , being a new truck you may want the dealer to check it out , if there is an issue , it needs to be documented if it is .

 

I found that you have to turn the ignition to "on" for a few seconds with the **** open to energize the fuel pump. Be sure to have something under the hose to catch the fuel.

Link with photo.

 

The dealer call me to day and said that the o-ring was split and is not available through parts. So they had to replace fuel filter housing/heater assembly to repair thanks for your help.