'87 4kq fuel problem?

[Luke Rickert]

Today while running errands (aka starting to do Christmas shopping)  I
experienced a strange problem with my car. It would start ok, but when I
tried to start moving, the throttle didn't do anything. After a little
while and flooring the throttle it worked and continued to operate
normally while I drove. This happened twice on warm starts car just after
getting gas. Any ideas or places to start looking? I haven't done anything
to the fuel system since getting the car in July (no problems) and don't
know what if anything has been replaced before that.

Thanks

Luke Rickert 
www.me.orst.edu/~rickert

Remember: There is nothing more dangerous than stupid people with power.