Well it wound up being a gummed/carbon coated exhaust valve for the #4 cylinder (could not fully close), so both heads are being pulled to check the rest of the valves and then check the heads for warping and cracks, figure I have that much labor into it already might as well add a few more hours to save me the money that could be spent if anything else failed. So now as it stand have had ALL injectors pulled, inspected and cleaned. Will have new set of plugs and distributer put in as well. Top end is/will be spotless and ready for another 100,000!!