i would say go and get some new wires

 

Did you check your cap and rotor, possibly corroded on the terminals of the cap. Usaully a bad plug wire will cause a more noticable miss under load unless it's burnt right through and grounding out on something. Cap and rotors are cheap.

 

the cap and rotor are good replaced them a couple mouths ago and all the wires say they are good when tested. I am gonna try new wires anyways.