Acceleration problems

Hey guys new to this forum!!

I have just recently rebuilt a 3rz motor. The truck had 189000 miles originally. Now it has about 192000 since the rebuild. It had 0 issues for the first 3000 miles. The last thousand miles or so it sputters when acceleration. It has new plugs I have cleaned the maf also changed the spark plugs wires. Any ideas?
A

 

Welcome to TW! Have you checked the injectors?

 

Yes I replaced the injectors. They where leaking about 900 miles ago. I also changed the spark plugs wires at the same time. I was thinking that it might be the coil pack? It has a new fuel filter as well.

 

Any one else have any thing else I should check this coming weekend.