ok done a little more investigating only the left pipe coming fron head seems to be burnt.the right is pretty much same color alway down.pulled the valve cover and noticed that the valves dont seem to be closing completely. i loosend the intake and axhaust rockers (and tuned engine so that in and ex was supposed to be closed) but still had pressure on valves, not much but enough to notice.anybody run across this before could it a lifter going bad.checked plug and you could see sighs of excessive heat but still aint checked the timing any help would be appreciated