i also have this problem and have gotten it to subdue somewhat through a series of fixes. however it still exists and i am not entirely sure if it has actually gotten any better or it is just my perception over the past month. here is a list of what i have done: brand new fuel filter, plugs, wires, and pcv valve. i have also cleaned my entire intake thoroughly. i have also pulled my plugs twice and checked the gap to make sure they are right. most of this stuff i would have done anyways but they should have fixed my problem. i have seen a few posts on this recently and have not seen any replies other than to check the things that i have already done. so as of right now i am going to test a few other things and hopefully run down the source.
