fuel problem i think

[culli]

hi everyone, im new to this so please bare with me.
i have a 92 4runner 3.0 v6.
i have only had it for a couple of months and have been driving mostly on the road, but on the weekend i went offroading and all was fine, awesome in fact. then i got back onto the main road and started my drive home and it started jumping and bunny hopping anywhere from 3500rpm and above, i pulled over and turned the car off, started it again and it drove fine for awhile then started doing the same thing, once again i turned it off, restarted it and it drove fine for awhile and this kept happening the whole way home.
once i got home and let it sit for an hour i took it for a drive round the streets and it drove like a dream.
could anyone tell me if this could be a contaminated fuel tank? my idea was that while offroading the fuel in the tank had been slushing crap around and when i finally got out on the road and got the revs up a bit the pump was sucking it up and blocking any access.
could this happen or does this sound right? cheers for any help, input, or suggestions anyone might have.

 

[Stick Figure]

First if you didn't figure out that this is in the wrong section for your year and motor, i would try posting it in the 2nd gen since they will know your vehicle better. But you really need to do some testing and see where the problem is. I would personally guess it is an ignition problem. Possible ignitor or coil. Seems like one of them is failing after it gets warm. I would warm it up and put a timing light on the plug wires and have someone rev it up and see if the ignition in breaking up. To test the fuel issue, i would put a fuel pressure gauge on it and check that its steady pressure even above 3500RPM or whenever the engine start to cut out.