running rough after disconnecting/reconnecting fuel pipes

hi I was doing some work on my campaign .I took of the supply and return fuel pipes in the bay ,to move them as I was also doing brake pipes.i connected back up and now running rough.i know this sounds stupid but will the car start if they are.round the wrong way?i replaced these a while back with braided hoses.the car will start but wont take a rev,and sounds like its on 3 cylinders.it ran fine before.i thought id ask before I change them round.

Yes you can get then on the wrong nipple. Swap them better / worse.  Worse reverse them again.  Better all fixed.

thanks briano , I usually do one at a time but ive got the braided hoses attached to the original pipe ends .their still attached at the fuel filter etc.i will swap round tmrw 

turned out to be the rotar arm.i had the pipes on the rightway round cause it would not start when I swapped them.after going through all other checks I decided to spray wd40 in the dizzy and run better but not 100%.so cleaned the cap put on another arm and running perfect .so a problem that happened nowhere near where I was working at.happy again