I HAVE SEEN ON SOME OF THE FORD V6 MOSTLY 3.0L AND 3.8L THAT THE RINGS ARE COOKED WHICH IS WHAT JEFF SAID ,BUT I HAVE ALSO SEEN WHERE THE INTAKE WAS SO HEATED THAT IT ALSO WAS WARPED AND NEEDED TO BE [...] WOULD ACCOUNT FOR THE ODD COMPRESSIONS AT ONY ONE SIDE... Login to read more.