well, with a search of every thing bosch i've gained that the plug i pulled out are on there hot end. while the r43s are more toward the cool end of the a/c line. but can't find what would caused the whiteiss or gay hue to the plug. quess i'll install the new plugs, slow the timing coming in (new recurve kit)and ring it out working my way back up with the timing. slowly learning. tim