Disconect main fuel line on Jeep 2005 Wrangler with 4.0L

That is a quick connect fitting, you'll need a special tool, you push lineforward insert tool and pull line off. Make sure to release the pressure though first.

I BELIEVE IT'S SORTA A FLANGE WHERE THE TWO PIECES MEET?

IF THIS IS CASE, THERE IS A SPRING SHAPED INTO A DOUGHNUT, THAT IS SORTA UNDER THE FLANGE

THE SPRING MUST BE EXPANDED (INTO A BIGGER DOUGHNUT) EVENLY TO RELEASE THE OTHER LINE

A SPECIAL TOOL (INEXPENSIVE) IS NEEDED TO DO SO, THESE TOOLS ARE MADE FOR SPECIFIC SIZED LINES....MOST SORTA STRADDLE THE LINE AND PUSH INTO THE "CRACK" CONTAINING THE DOUGHNUT SPRING

HERE ARE SOME EXAMPLES

http://www.autozone.com/autozone/accessories/Tools-Garage-and-Equipment/Line-Disconnect-Tool/_/N-26c9?filterByKeyWord=FUEL+LINE+TOOL&fromString=search

LET ME KNOW IF THIS HELPS

THE MEDIC