hi all just wonderd if any 1 has any ideas on this i have a 2.9 twinturbo v6 with stage 3 heads just got her running again did my tappet adjustment course they sounded way out did that and there is no diffrence at all im coming to the conclusion i have some sort of knocking on the drivers side tappets but i cant see anything wrong and when rev'd up sounds ok its just on idle like tak tak tak tak any 1 got any ideas

thx rich