I recently noticed a very nice "loaner" tool for fuel line disconnects at O'Reilly. I asked to see them and I think they might work GREAT on the intake fuel lines. The box says for "GM & FORD Fuel Tank Fuel Line Disconnects" but the tools are sized 3/8" & 5/16". This is the small metal disconnect tool sizes I used when removing my intake. Mine work OK but these look like it will make the job take no effort at all.

They are plastic but very sold and well made. Check them out next time you have to remove your intake.