My jeep takes about a solid 4 or 5 seconds to turn over and ignition in the first cylinder from a cold start. If the engine is warm then it takes about 1 or 2 seconds.
I'll give that a shot. My 4.2 takes about 10 seconds to start.what motor do you have? stock? if its a 4.0 or 2.5 wait a few seconds after turning the key to let the fuel pump build pressure
if its a 4.2 I wouldn't worry about it, when I had a weber carb if it sat for more than a day it took forever to start. the holley I have now starts within 2 turns.
I have read that on the 4.2 the return line on the fuel filter should be on top so the filter doesn't drain.