I have changed the fuel filter on the road and never lost one drop of diesel and the engine was hot from towing up a pass.
Today I did the same job in my garage and couldn't get the filter out of the truck because the diesel was flowing and made the filter slick. I worked fast after finally removing the filter and finished the job by washing the engine and tires and the garage floor. The question was why did the fuel keeping coming out of the filter housing this time and not the first filter change?? I used the directions from this forum and had all the tools but what a difference.
chevman
2005 3500 2wd CC duramax dooley
2001 35 ft avalon alpenlite #5978
easy rider /reese air hitch
trailair center point suspension
3600 Garmin GPS
JT strong arm stabilizers
prodigy
TX Christoper's CAI
KSH inbed fuel tank
total weight 22920 lbs

The only thing I can think of is you were on un-level ground. But your garage should be level enough.????

You weren't accidentally leaning on the priming button, were you?

Fuel tank full or near full?

Numbnuts yes the orginial tank was full and the 52 gal inbed was almost full. chevman

Numbnuts yes the orginial tank was full and the 52 gal inbed was almost full. chevman

Gravity! If you in bed tank was almost full, then the fuel level was probably above that of the filter housing causing the fuel to run out.

Thanks everybody I believe Gritdog was right because I was on the factory tank the first time and inbed tank yesterday. chevman