Aaron,

My old 4.2 used to do it every now and again too.

Never harmed it at all, as it still ran like clockwork when I sold it.

I would add that it is the fuel solenoid too - If it bothers you too much, then take a look at the wiring first to make sure that the terminations are good, and if there doesn't seem to be a damage or corrosion, then take a look at the solenoid itself.

Mic