V6 engine, believe the SOHC one.

About 2 weeks ago purchased gas at a location where the station just
ran out of gas.  The next
morning the explorer would not start unless you gave it alot of gas.
If you kept the RPMS up, then it would run.  Noticed alot of
condensation out of the exhaust.

Eventually changed the fuel filter, and have ran about 2 tanks of gas
through the car.  It will now start and run normally, but on an
intermittent basis it will not start and idle after it is cold.   If
you give it more gas, then it will run.   Once it warms up, then it
appears to run fine.   This is intermittent.   I also swapped out the
fuel pump relay switch.

I believe this problem happens, even though the fuel pump seems to be
properly pressuring the system when you turn the key on.

Is it fuel injectors, or fuel pump?  It would not seem to be the pump,
since the engine runs fine
at higher RPMS.

I was also reading that this engine had a campaign for the intake
manifold.