ok well i had a new timing belt put in my car and it ran for 2 days then i turned it off one day and it would not start right and when it did start it would not turn up above 2500 rpm i was told timing and i tryed retiming it then my frand came down and said something about a zero tal engine and pulled my head off said that i smashed a valve i was all so told this here then when we got the head off there was nothing rong with it fun but i found the knock sensor brocken in 1/2 could this mack the d16y8 do this or what might i try next after i get it back to gether