In Reply to: sticky valve?/4.6 triton posted by lonestarjeff on November 29, 2018 at 16:18:53:
Does it tap tap tap when you first start it up even at idle??
We had a 2006 Mercury Marquis that did that and I changed the oil and it cured itself. I figured it got some trash that clogged some oil to a lifter?? Don't know, but it went away and I was happy. Good luck.